\chapter*{ACM Computer Science Classification in RDFS
} \addcontentsline{toc}{chapter}{Appendix D: RDFS in ACM
Classification}

\hspace{0.3in}This appendix shows the ACM classification in RDFS,
which provides the taxonomies of the Computer Science expertise for
our FindXpRT system.

\begin{small}
\begin{verbatim}
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/TR/1999/PR-rdf-schema-19990303#"
xml:lang="en">
    <rdf:Description rdf:ID="Computing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computing_Milieux">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Personal_Computing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing_Milieux"/>
    </rdf:Description>
    <rdf:Description rdf:ID="History_of_Computing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing_Milieux"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Hardware">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
        <rdfs:subClassOf rdf:resource="#History_of_Computing"/>
        <rdfs:subClassOf rdf:resource="#Personal_Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Software">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
        <rdfs:subClassOf rdf:resource="#History_of_Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computer_Systems_Organization">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Theory_of_Computation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Mathematics_of_Computing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Information_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computing_Methodologies">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computer_Applications">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Control_Structures_and_Microprogramming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Hardware"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Arithmetic_and_Logic_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Hardware"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Memory_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Hardware"/>
    </rdf:Description>
    <rdf:Description rdf:ID="IO_and_Data_Communications">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Hardware"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Register_Transfer_Level_Implementation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Hardware"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Logic_Design">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Hardware"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Integrated_Circuits">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Hardware"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Performance_and_Reliability">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Hardware"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Control_Design_Styles">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Control_Structures_and_Microprogramming"/>
    </rdf:Description>
    <rdf:Description
        rdf:ID="Control_Structure_Performance_Analysis_and_Design_Aids">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Control_Structures_and_Microprogramming"/>
    </rdf:Description>
    <rdf:Description
        rdf:ID="Control_Structure_Reliability_Testing_and_Fault_Tolerance">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Control_Structures_and_Microprogramming"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Microprogram_Design_Aids">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Control_Structures_and_Microprogramming"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Microcode_Applications">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Control_Structures_and_Microprogramming"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Hardwired_Control">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Control_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Microprogrammed_Logic_Arrays">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Control_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Writable_Control_Store">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Control_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Firmware_Engineering">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Microprogram_Design_Aids"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Languages_and_Compilers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Microprogram_Design_Aids"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Machine_Independent_Microcode_Generation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Microprogram_Design_Aids"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Direct_Data_Manipulation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Microcode_Applications"/>
    </rdf:Description>
    <rdf:Description
        rdf:ID="Firmware_Support_of_Operating_Systems_or_Instruction_Sets">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Microcode_Applications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Instruction_Set_Interpretation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Microcode_Applications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Peripheral_Control">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Microcode_Applications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Special_Purpose">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Microcode_Applications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="High_Speed_Arithmetic">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Arithmetic_and_Logic_Structures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Design_Styles">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Arithmetic_and_Logic_Structures"/>
        <rdfs:subClassOf rdf:resource="#Memory_Structures"/>
        <rdfs:subClassOf rdf:resource="#Logic_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Calculator">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Pipeline">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Cost_or_Performance">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#High_Speed_Arithmetic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Semiconductor_Memories">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Memory_Structures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Dynamic_Memory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Semiconductor_Memories"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Read_Only_Memory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Semiconductor_Memories"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Static_Memory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Semiconductor_Memories"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Associative_Memories">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Cache_Memories">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interleaved_Memories">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Mass_Storage">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Primary_Memory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Sequential_Access_Memory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Shared_Memory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Communications_Devices">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#IO_and_Data_Communications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="IO_Devices">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#IO_and_Data_Communications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interconnections">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#IO_and_Data_Communications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Receivers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Communications_Devices"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Transmitters">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Communications_Devices"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Channels_and_Controllers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#IO_Devices"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Terminals_and_Printers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#IO_Devices"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Image_Display">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#IO_Devices"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Voice">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#IO_Devices"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Asynchronous_or_Synchronous_Operation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interconnections"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Fiber_Optics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interconnections"/>
    </rdf:Description>
    <rdf:Description rdf:ID="interfaces">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interconnections"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Parallel_IO">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interconnections"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Physical_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interconnections"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Topology">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interconnections"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reliability_Testing_and_Fault_Tolerance">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Arithmetic_and_Logic_Structures"/>
        <rdfs:subClassOf rdf:resource="#Memory_Structures"/>
        <rdfs:subClassOf rdf:resource="#IO_and_Data_Communications"/>
        <rdfs:subClassOf rdf:resource="#Performance_and_Reliability"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Hardware_Reliability">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Reliability_Testing_and_Fault_Tolerance"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Software_Engineering">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Design">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Register_Transfer_Level_Implementation"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Arithmetic_and_Logic_Units">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Control_Design">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Path_Design">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Memory_Design">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Styles">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Cellular_Arrays_and_Automata">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Combinational_Logic">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Logic_Arrays">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Memory_Control_and_Access">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Memory_Used_as_Logic">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Parallel_Circuits">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Sequential_Circuits">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Design_Aids">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Register_Transfer_Level_Implementation"/>
        <rdfs:subClassOf rdf:resource="#Logic_Design"/>
        <rdfs:subClassOf rdf:resource="#Integrated_Circuits"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Switching_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Aids"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Types_and_Design_Styles">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Integrated_Circuits"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Advanced_Technologies">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Types_and_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Algorithms_Implemented_in_Hardware">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Types_and_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Gate_Arrays">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Types_and_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="IO_Circuits">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Types_and_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Memory_Technologies">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Types_and_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Microprocessors_and_Microcomputers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Types_and_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Standards_Cells">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Types_and_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="VLSI">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Types_and_Design_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Layout">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Aids"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Placement_and_Routing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Aids"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Processor_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Systems_Organization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computer_Communication_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Systems_Organization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Special_Purpose_and_Application_Based_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Systems_Organization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Performance_of_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Systems_Organization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computer_System_Implementation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Systems_Organization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Single_Data_Stream_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processor_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Multiple_Data_Stream_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processor_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Other_Architecture_Styles">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processor_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Parallel_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processor_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID=
        "Multiple_Instruction_Stream_and_Single_Data_Stream_Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Single_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="RISC_or_CISC_and_VLIW_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Single_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID=
        "Single_Instruction_Stream_and_Single_Data_Stream_Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Single_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Von_Neumann_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Single_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Array_and_Vector_Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Multiple_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Associative_Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Multiple_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Connection_Machines">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Multiple_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interconnection_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Multiple_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID=
        "Multiple_Instruction_Stream_and_Multiple_Data_Stream_Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Multiple_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Parallel_Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Multiple_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID=
        "Single_Instruction_Stream_and_Multiple_Data_Stream_Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Multiple_Data_Stream_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Adaptable_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Other_Architecture_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Analog_Computers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Other_Architecture_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Capability_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Other_Architecture_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Cellular_Architecture">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Other_Architecture_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Flow_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Other_Architecture_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Heterogeneous_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Other_Architecture_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="High_Level_Languages_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Other_Architecture_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Stack_Oriented_Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Other_Architecture_Styles"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Parallel_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Mobile_Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Parallel_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Architecture_and_Design">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Communication_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Protocols">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Communication_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Operations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Communication_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Local_and_Wide_Area_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Communication_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Internetworking">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Communication_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Asynchronous_Transfer_Mode">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Centralized_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Circuit_Switching_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Frame_Relay_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="ISDN">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Communications">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Topology">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Packet_Switching_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Store_and_Forward_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Wireless_Communication">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Architecture_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Protocol_Architecture">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Protocols"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Protocol_Verification">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Protocols"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Routing_Protocols">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Protocols"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Operations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Monitoring">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Operations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Public_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Network_Operations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Operating_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Organization_and_Design">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Operating_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Information_Storage_and_Retrieval">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Information_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Systems_and_Software">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Information_Storage_and_Retrieval"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_Communication_Networks"/>
        <rdfs:subClassOf rdf:resource="#Organization_and_Design"/>
        <rdfs:subClassOf rdf:resource="#Systems_and_Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Client_or_Server">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Distributed_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_Applications">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Distributed_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Operating_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Distributed_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Access_Schemes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Local_and_Wide_Area_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Buses">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Local_and_Wide_Area_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Ethernet">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Local_and_Wide_Area_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="High_Speed">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Local_and_Wide_Area_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Internet">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Local_and_Wide_Area_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Token_Rings">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Local_and_Wide_Area_Networks"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Routers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Internetworking"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Microprocessor_or_Microcomputer_Applications">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Special_Purpose_and_Application_Based_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Process_Control_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource=
            "#Special_Purpose_and_Application_Based_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Real_Time_and_Enbedded_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Special_Purpose_and_Application_Based_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Signal_Processing_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Special_Purpose_and_Application_Based_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Smartcards">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Special_Purpose_and_Application_Based_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Design_Studies">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Performance_of_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Measurement_Techniques">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Performance_of_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Modeling_Techniques">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Performance_of_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Performance_Attributes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Performance_of_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reliability_Availability_and_Serviceability">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Performance_of_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Large_and_Medium_Computers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_System_Implementation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Minicomputers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_System_Implementation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="VLSI_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Computer_System_Implementation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Servers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computer_System_Implementation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Super_Computers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Large_and_Medium_Computers"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Microprocessors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Minicomputers"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Personal_Computers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Minicomputers"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Portable_Devices">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Minicomputers"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Workstations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Minicomputers"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Programming_Techniques">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Programming_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Applicative_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Concurrent_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Sequential_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Visual_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Concurrent_Programming"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Parallel_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Concurrent_Programming"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Requirements_or_Specifications">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Design_Tools_and_Techniques">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Coding_Tools_and_Techniques">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Software_or_Program_Verification">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Testing_and_Debugging">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Programming_Environments">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distribution_Maintenance_and_Enhancement">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Metrics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Software_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interoperability">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reusable_Software">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Engineering"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Elicitation_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Requirements_or_Specifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Tools">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Requirements_or_Specifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computer_Aided_Software_Engineering">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Decision_Tables">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Evolutionary_Prototyping">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Flow_Charts">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Modules_and_Interfaces">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Object_Oriented_Design_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Petri_Nets">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Software_Libraries">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="State_Diagrams">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Pretty_Printers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Coding_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Program_Editors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Coding_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reentrant_Code">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Coding_Tools_and_Techniques"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Assertion_Checkers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_or_Program_Verification"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Class_Invariants">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_or_Program_Verification"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Correctness_Proofs">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_or_Program_Verification"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Formal_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_or_Program_Verification"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Model_Checking">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_or_Program_Verification"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Programming_by_Contract">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_or_Program_Verification"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reliability">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_or_Program_Verification"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Statistical_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_or_Program_Verification"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Validation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_or_Program_Verification"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Code_Inspections_and_Walk_Throughs">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Testing_and_Debugging"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Debugging_Aids">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Testing_and_Debugging"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_Debugging">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Testing_and_Debugging"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Dumps">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Testing_and_Debugging"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Error_Handling_and_Recovery">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Testing_and_Debugging"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Symbolic_Execution">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Testing_and_Debugging"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Testing_Tools">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Testing_and_Debugging"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Tracing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Testing_and_Debugging"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Graphical_Environments">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Environments"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Integrated_Environments">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Environments"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interactive_Environments">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Environments"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Corrections">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Distribution_Maintenance_and_Enhancement"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Extensibility">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Distribution_Maintenance_and_Enhancement"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Restructruing_Reverse_Engineering_and_Reengineering">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Distribution_Maintenance_and_Enhancement"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Complexity_Measures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Metrics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Performance_Measures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Metrics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Process_Metrics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Metrics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Product_Metrics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Metrics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Software_Science">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Metrics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Cost_Estimation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Productivity">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Pogramming_Teams">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Software_Configuration_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Software_Process_Models">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Software_Quality_Assurance">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Time_Estimation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Representation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Abstraction">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Domain_Specific_Architectures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Information_Hiding">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Software_Architectures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Mapping">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interoperability"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_Objects">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interoperability"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interface_Definition_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interoperability"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Domain_Engineering">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Reusable_Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reusable_Libraries">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Reusable_Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reuse_Models">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Reusable_Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Formal_Definition_and_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Languages_Classifications">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Languages_Constructs_and_Features">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Semantics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Formal_Definition_and_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Syntax">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Formal_Definition_and_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Applicative_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Concurrent_Distributed_and_Parallel_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Constraint_and_Logic_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Flow_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Design_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Extensible_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Macro_and_Assembly_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Microprogramming_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Multiparadigm_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Nondeterministic_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Object_Oriented_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Specialized_Application_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Very_High_Level_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Classifications"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Abstract_Data_Types">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Classes_and_Objects">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Concurrent_Programming_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Constraints">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Control_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Coroutines">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Types_and_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Dynamic_Storage_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Frameworks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Inheritance">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Modules_and_Packages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Polymorphism">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Procedures_Functions_and_Subroutines">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Recursion">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Languages_Constructs_and_Features"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Processors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Communications_Devices"/>
        <rdfs:subClassOf rdf:resource="#Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Code_Generation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Compilers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Debuggers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Incremental_Compilers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interpreters">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Memory_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Preprocessors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Retargetable_Compilers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Run_Time_Environments">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description
        rdf:ID="Translator_Writing_Systems_and_Compiler_Generators">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Process_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Operating_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Storage_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Operating_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="File_Systems_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Operating_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Communications_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Operating_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reliabilty">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Operating_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Performance">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Operating_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Systems_Programs_and_Utilities">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Operating_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Deadlocks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Process_Management"/>
    </rdf:Description>
    <rdf:Description
        rdf:ID="Multiprocessing_or_Multiprogramming_or_Multitasking">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Process_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Mutual_Exclusion">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Process_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Synchronization">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Process_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Threads">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Process_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Allocation_or_Deallocation_Strategies">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Storage_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_Memories">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Storage_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Garbage_Collection">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Storage_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Main_Memory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Storage_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Secondary_Memory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Storage_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Storage_Hierarchies">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Storage_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Swapping">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Storage_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Directory_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#File_Systems_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_File_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#File_Systems_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Maintenance">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#File_Systems_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Buffering">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Communications_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Message_Sending">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Communications_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Communication">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Communications_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Terminal_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Communications_Management"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Backup_Procedures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Reliabilty"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Checkpoint_or_Restart">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Reliabilty"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Management_of_Computing_and_Information_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computing_Milieux"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Security_and_Protection">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Operating_Systems"/>
        <rdfs:subClassOf
            rdf:resource="#Management_of_Computing_and_Information_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Access_Controls">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Security_and_Protection"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Cryptographic_Controls">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Security_and_Protection"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Information_Flow_Controls">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Security_and_Protection"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Security_Kernels">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Security_and_Protection"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Batch_Processing_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Organization_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Hierarchical_Design">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Organization_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Real_Time_Systems_and_Embedded_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Organization_and_Design"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Measurements">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Performance"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Modeling_and_Prediction">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Performance"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Operational_Analysis">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Performance"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Stochastic_Analysis">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Performance"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Command_and_Control_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Systems_Programs_and_Utilities"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Linkers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Systems_Programs_and_Utilities"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Loaders">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Systems_Programs_and_Utilities"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Window_Managers">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Systems_Programs_and_Utilities"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Storage_Representations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Encryption">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Coding_and_Information_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Files">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Arrays">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Structures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distributed_Data_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Structures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Graphs_and_Networks">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Structures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Lists_Stacks_and_Queues">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Structures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Records">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Structures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Tables">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Structures"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Composite_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Storage_Representations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Contiguous_Representations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Storage_Representations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Hash_Table_Representations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Storage_Representations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Linked_Representations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Storage_Representations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Object_Representations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Storage_Representations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Primitive_Data_Items">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Storage_Representations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Code_Breaking">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Encryption"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Encryption_Standard">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Encryption"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Public_Key_Cryptosystems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Data_Encryption"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Data_Compaction_and_Compression">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Coding_and_Information_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Error_Control_Codes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Coding_and_Information_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Formal_Models_of_Communication">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Coding_and_Information_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Nonsecret_Encoding_Schemes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Coding_and_Information_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Backup_or_Recovery">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Files"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Organization_or_Structure">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Files"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Sorting_or_Searching">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Files"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computation_by_Abstract_Devices">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Theory_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Analysis_of_Algorithms_and_Problem_Complexity">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Theory_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Logics_and_Meanings_of_Programs">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Theory_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Mathematical_Logic_and_Formal_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Theory_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Models_of_Computation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computation_by_Abstract_Devices"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Modes_of_Computation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computation_by_Abstract_Devices"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Complexity_Measures_and_Classes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Computation_by_Abstract_Devices"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Automata">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Bounded_Action_Devices">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computability_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Relations_Between_Models">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Self_Modifying_Machines">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Unbounded_Action_Devices">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Alternation_and_Nondeterminism">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interactive_and_Reactive_Computation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Online_Computation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Parallelism_and_Concurrency">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Probabilistic_Computation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Relations_Among_Modes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Relativized_Computation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Models_of_Computation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Complexity_Hierarchies">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Complexity_Measures_and_Classes"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Machine_Independent_Complexity">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Complexity_Measures_and_Classes"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reducibility_and_Completeness">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Complexity_Measures_and_Classes"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Relations_Among_Complexity_Classes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Complexity_Measures_and_Classes"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Numerical_Algorithms_and_Problems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Analysis_of_Algorithms_and_Problem_Complexity"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Nonmumerical_Algorithms_and_Problems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Analysis_of_Algorithms_and_Problem_Complexity"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Tradeoffs_Between_Complexity_Measures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf
            rdf:resource="#Analysis_of_Algorithms_and_Problem_Complexity"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computation_of_Transforms">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computations_in_Finite_Fields">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computations_on_Matrices">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computations_on_Polynomials">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Number_Theoretic_Computations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Complexity_of_Proof_Procedures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Nonmumerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computations_on_Discrete_Structures">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Nonmumerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Geometrical_Problems_and_Computations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Nonmumerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Pattern_Matching">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Nonmumerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Routing_and_Layout">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Nonmumerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Sequencing_and_Scheduling">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Nonmumerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Sorting_and_Searching">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Nonmumerical_Algorithms_and_Problems"/>
    </rdf:Description>
    <rdf:Description
        rdf:ID="Specifying_and_Verifying_and_Reasoning_about_Programs">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Logics_and_Meanings_of_Programs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Semantics_of_Programming_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Logics_and_Meanings_of_Programs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Studies_of_Program_Constructs">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Logics_and_Meanings_of_Programs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Assertions">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource=
            "#Specifying_and_Verifying_and_Reasoning_about_Programs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Logics_of_Programs">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource=
            "#Specifying_and_Verifying_and_Reasoning_about_Programs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Mechanical_Verification">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource=
            "#Specifying_and_Verifying_and_Reasoning_about_Programs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Pre__and_Post_Conditions">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource=
            "#Specifying_and_Verifying_and_Reasoning_about_Programs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Specification_Techniques">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource=
            "#Specifying_and_Verifying_and_Reasoning_about_Programs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Algebraic_Approaches_to_Semantics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Semantics_of_Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Denotational_Semantics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Semantics_of_Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Operational_Semantics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Semantics_of_Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Partial_Evaluation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Semantics_of_Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Process_Models">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Semantics_of_Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Program_Analysis">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Semantics_of_Programming_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Control_Primitives">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Studies_of_Program_Constructs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Functional_Constructs">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Studies_of_Program_Constructs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Object_Oriented_Constructs">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Studies_of_Program_Constructs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Program_and_Recursion_Schemes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Studies_of_Program_Constructs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Type_Structure">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Studies_of_Program_Constructs"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Mathematical_Logic">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic_and_Formal_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Grammars_and_Other_Rewriting_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic_and_Formal_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Formal_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic_and_Formal_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computational_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Computational_Logic">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Lambda_Calculus_and_Related_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Logic_and_Constraint_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Mechanical_Theorem_Proving">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Model_Logic">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Model_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Proof_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Recursive_Function_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Set_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Logic"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Grammar_Types">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Grammars_and_Other_Rewriting_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Parallel_Rewriting_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Grammars_and_Other_Rewriting_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Thue_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Grammars_and_Other_Rewriting_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Algebraic_Languages_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Formal_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Classes_Defined_by_Grammars_or_Automata">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Formal_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Classes_Defined_by_Resource_Bounded_Automata">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Formal_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Operations_on_Languages">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Formal_Languages"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Numerical_Analysis">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematics_of_Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Discrete_Mathematics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematics_of_Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Probability_and_Statistics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematics_of_Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Mathematical_Software">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematics_of_Computing"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interpolation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Analysis"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Approximation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Analysis"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Numerical_Linear_Algebra">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Analysis"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Quadrature_and_Numerical_Differentiation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Analysis"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Roots_of_Nonlinear_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Analysis"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Ordinary_Differential_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Analysis"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Partial_Differential_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Analysis"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Integral_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Analysis"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Difference_Formulas">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interpolation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Extrapolation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interpolation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Interpolation_Formulas">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interpolation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Spline_and_Piecewise_Polynomial_Interpolation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Interpolation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Approximation_of_Surfaces_and_Cotours">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Chebyshev_Approximation_and_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Elementary_Function_Approximation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Fast_Fourier_Transforms">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Least_Squares_Approximation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Linear_Approximation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Minimax_Approximation_and_Algorithms">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Nonlinear_Approximation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Rational_Approximation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Special_Function_Approximation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Spline_and_Piecewise_Polynomial_Approximation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Wavelets_and_Fractals">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Approximation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Conditioning">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Linear_Algebra"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Determinants">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Linear_Algebra"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Eigenvalues_and_Eigenvectors">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Linear_Algebra"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Linear_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Linear_Algebra"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Matrix_Inversion">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Linear_Algebra"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Pseudoinverses">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Linear_Algebra"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Singular_Value_Decomposition">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Linear_Algebra"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Sparse_Structured_and_Very_Large_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Linear_Algebra"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Adaptive_and_Iterative_Quadrature">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Quadrature_and_Numerical_Differentiation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Automatic_Differentiation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Quadrature_and_Numerical_Differentiation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Equal_Interval_Integration">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Quadrature_and_Numerical_Differentiation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Gaussian_Quadrature">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Quadrature_and_Numerical_Differentiation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Multidimensional_Quadrature">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Quadrature_and_Numerical_Differentiation"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Continuation_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Roots_of_Nonlinear_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Convergence">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Roots_of_Nonlinear_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Polynomials_Methods_for">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Roots_of_Nonlinear_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Systems_of_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Roots_of_Nonlinear_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Optimization">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Microprogram_Design_Aids"/>
        <rdfs:subClassOf rdf:resource="#Design_Aids"/>
        <rdfs:subClassOf rdf:resource="#Processors"/>
        <rdfs:subClassOf rdf:resource="#Files"/>
        <rdfs:subClassOf rdf:resource="#Numerical_Analysis"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Constrained_Optimization">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Convex_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Global_Optimization">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Gradient_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Integer_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Least_Squares_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Linear_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Nonlinear_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Quadratic_Programming_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Simulated_annealing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Stochastic_Programming">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Unconstrained_Optimization">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Optimization"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Boundary_Value_Problems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Ordinary_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Chaotic_Systems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Ordinary_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Convergence_and_Stability">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Ordinary_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Differential_Algebraic_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Ordinary_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Initial_Value_Problems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Ordinary_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Multistep_and_Multivalue_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Ordinary_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="One_Step_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Ordinary_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Stiff_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Ordinary_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Domain_Decomposition_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Elliptic_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Finite_Element_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Finite_Volume_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Hyperbolic_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Inverse_Problems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Iterative_Solution_Techiques">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Method_of_Lines">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Multigrid_and_Multilevel_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Parabolic_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Spectral_Methods">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Partial_Differential_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Delay_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Integral_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Fredholm_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Integral_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Integro_Differential_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Integral_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Volterra_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Integral_Equations"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Combinatorics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Discrete_Mathematics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Graph_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Discrete_Mathematics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Combinatorial_Algorithms">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Combinatorics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Counting_Problems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Combinatorics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Generating_Functions">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Combinatorics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Permutations_and_Combinations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Combinatorics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Recurrences_and_Difference_Equations">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Combinatorics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Graph_Algorithms">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Graph_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Graph_Labeling">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Graph_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Hypergraphs">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Graph_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Network_Problems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Graph_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Path_and_Circuit_Problems">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Graph_Theory"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Contingency_Table_Analysis">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Correlation_and_Regression_Analysis">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Distribution_Functions">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Experimental_Design">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Markov_Processes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Multivariate_Statistics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Nonparametric_Statistics">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Probabilistic_Algorithms">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Random_Number_Generation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reliability_and_Life_Testing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Renewal_Theory">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Robust_Regression">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Statistical_Computing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Statistical_Software">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Stochastic_Processes">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Survival_Analysis">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Time_Series_Analysis">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Probability_and_Statistics"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Algorithms_Design_and_Analysis">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Certification_and_Testing">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Efficiency">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Parallel_and_Vector_Implementation">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Reliabilty_and_Robustness">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Mathematical_Software"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Models_and_Principles">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#Information_Systems"/>
    </rdf:Description>
    <rdf:Description rdf:ID="Databases_Management">
        <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
        <rdfs:subClassOf rdf:resource="#I