SP500215 Appendix B: System Features Appendix National Institute of Standards and Technology D. K. Harman IA. CONSThUCTION OF INDICES, KNOWIEDGE BASES, AND OIlIER DATA STRUCTURES -- METhODS USEU [OCRerr]M NAME I c[OCRerr] [OCRerr] ERIM ] mic [OCRerr] CUIRI [OCRerr] UCLA [ SEC [OCRerr]fflfl Ust Yes No Yes No Yes No ThThes 658 stopwords 438 stop words `of Words 284 semi- 58 semi- 250 ____________________ stopwords [1] _____________ 370 stopwords (5) ___________ dVocabulary No No No No No No No ,, Yes No Yes Not currently Yes Based on Based on Porter Suffix stripping d Algorithms Porter [21 lovi's (2] (Porter, 1980) [OCRerr]ogical analysis Not yet No [OCRerr]hting No No Yes IDF No Yes Yes (7) No, a few Yes No iscovery phrases are _______________ recognized No Yes No Yes [6) ________ phrase Adjacent words Noun Statistical [OCRerr] Methods tagging ______________ ic Methods Yes parsing No No No No No No `ise Disambiguation No No No No None No Associations No No No No No [OCRerr]tinition ecking [OCRerr]anual Correction) No No No No No No Correction No No No No No No [OCRerr]oun Identification No No No No Yes No -[OCRerr] Not used [3) No No Not used (3] No No Patterns? Date ranges Date ranges _____________ [OCRerr]anually Indexed Terms No No No No No No echniques to Build Data `es No [4] Yes [8]