SP500215 Appendix B: System Features Appendix National Institute of Standards and Technology D. K. Harman III. SEARCHING (CON[OCRerr] `EM NAME [ C[OCRerr] ] ERIM [ JMC [_CIIIU_[OCRerr] UCLA [OCRerr] SEC ] ETH [ TRW1 Ramking __ ___ Normalized `equency Sometimes Yes Yes Sometimes feature frequency Yes ______ Normalized Document Yes Yes inverse cy documents Yes Yes Yes _________ _______ frequency Term [OCRerr] From Based on relevant From derived sin Weights relevance (training) documents relevance analysis information retrieved by a give[OCRerr]i information databas when available term when available relevan Closeness Based inversely on the distance in paragraphs in Document from the beginning of the document lAxical reoognition of some antecedent- Clues reference ______________ oombinations Adjacent words are [OCRerr] of Terms used for phrases Yes ion Theoretic Eudidean length of document it length Sometimes Yes Sometimes vector ~ess ~equency `dficity __________ [OCRerr]ise Frequency _______________ [OCRerr]tance ________________ __________________ [1] ________________________