classifications_schemes

  1. Office of Patent Classification
  2. The US Patent Office's classification, which is likely a must when dealing with US patents, with the following software-related classes:
    1. 345: COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS
    2. 700: DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS (their caps!)
    3. 701: DATA PROCESSING: VEHICLES, NAVIGATION, AND RELATIVE LOCATION
    4. 702: DATA PROCESSING: MEASURING, CALIBRATING, OR TESTING
    5. 703: DATA PROCESSING: STRUCTURAL DESIGN, MODELING, SIMULATION, AND EMULATION
    6. 704: DATA PROCESSING: SPEECH SIGNAL PROCESSING, LINGUISTICS, LANGUAGE TRANSLATION, AND AUDIO COMPRESSION/DECOMPRESSION
    7. 705: DATA PROCESSING: FINANCIAL, BUSINESS PRACTICE, MANAGEMENT, OR COST/PRICE DETERMINATION
    8. 706: DATA PROCESSING: ARTIFICIAL INTELLIGENCE
    9. 707: DATA PROCESSING: DATABASE AND FILE MANAGEMENT OR DATA STRUCTURES
    10. 711: ELECTRICAL COMPUTERS AND DIGITAL PROCESSING SYSTEMS: MEMORY (e.g., 711/216 is hashing)
    11. 715: DATA PROCESSING: PRESENTATION PROCESSING OF DOCUMENT, OPERATOR INTERFACE PROCESSING, AND SCREEN SAVER DISPLAY PROCESSING
    12. 717: DATA PROCESSING: SOFTWARE DEVELOPMENT, INSTALLATION, AND MANAGEMENT
    13. 718: ELECTRICAL COMPUTERS AND DIGITAL PROCESSING SYSTEMS: VIRTUAL MACHINE TASK OR PROCESS MANAGEMENT OR TASK MANAGEMENT/CONTROL
  3. NIST's Guide to Available Mathematical Software
  4. The ACM Computing Classification System (1998) (Older versions also available)