IRS13 Appendix A: Recall-Precision Tables appendix Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. A-13 Cosine Numeric Correlation Text, Titleweight = 2 Thesaurus-i Thesaurus-2 P H p 0.1 0.8718 0.1 0.7828 0.2 0.7614 0.2 o.6i86 0.3 0.6652 0.3 0.5205 o.4 0.5879 o.4 o.4[OCRerr]88 0.5 0.5075 0.5 0.4oo[OCRerr] 0.6 0.4552 0.6 0.3637 0.7 0.4069 0.7 0.3346 0.8 0.3580 0.8 0.3071 0.9 0.2984 0.9 0.2613 1.0 0.2342 1.0 O.19[OCRerr]8 RNK REC 0.2871 RNK REC o.24oo LOG PRE 0.4143 LOG PRE 0.3697 NOR REC 0.8222 NOR REC= 0.7797 NOR PRE 0.6283 NOR PRE 0.5486 Cosine Numeric Correlation Abstract Su[OCRerr]fix `s' Stem Thesaurus-i Thesaurus -SAl H p H P H p H p 0.1 0.7657 0.1 0.7963 0.1 0.8788 0.1 0.7729 0.2 0.6054 0.2 0.6350 0.2 0.7567 0.2 O.586i 0.3 0.5076 0.3 0.5283 0.3 0.6464 0.3 o.494i 0.4 0.4383 0.4 0.4603 o.4 0.5577 0.4 0.4299 0.5 0.3808 0.5 o.4o[OCRerr]i 0.5 0.4912 0.5 0.3761 0.6 0.3519 0.6 0.3699 0.6 0.4470 0.6 0.3514 0.7 0.3202 0.7 0.3383 0.7 0.3893 0.7 0.3251 0.8 0.2751 0.8 0.2996 0.8 0.3287 0.8 0.2904 0.9 0.2221 0.9 0.2568 0.9 0.2726 0.9 0.2445 1.0 0.1622 1.0 0.2018 1.0 0.2093 1.0 0.1862 RNK REC 0.2010 RNK REC 0.2415 RNK REC 0.2534 RNK REC 0.2282 LOG PRE 0.3309 LOG PRE 0.3587 LOG PRE 0.3837 I LOG PRE 0.3576 NOR REC 0.7253 NOR REC 0.7601 NOR REC o.80i6 NOR REC= 0.7548 NOR PRE 0.4[OCRerr]7 NOR PRE= 0.5326 NOR PRE= 0.6069 NOR PRE 0.5190