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. Cosine Numeric Correlation Title Stem Thesaurus -2 Thesaurus-3 R P R P R P 0.1 0.8001 0.1 0.8010 0.1 0.7928 0.2 0.63[OCRerr]3 0.2 0.6419 0.2 0.6370 0.3 0.5273 0.3 0.5154 0.3 0.5557 0.4 0.3946 o.4 o.4oi6 o.4 o.4686 0e5 0.3166 0.5 0.3173 0.5 0.3909 0.6 0.2568 0.6 0.3008 0.6 0.3348 0.7 0.2075 0.7 0.2611 0.7 0.2682 0.8 0.1484 0.8 0.2057 0.8 0.2125 0.9 o.o848 0.9 0.1335 0.9 0.1348 1.0 o.o488 1.0 0.0830 1.0 o.o868 RNK REC= 0.1018 RNK REC[OCRerr].1434 RNK REC= 0.1510 LOG PRE 0.4996 LOG PRE=0.5343 LOG PRE 0.5437 [OCRerr]R REC= o.8i45 [OCRerr]OR REC=O.8436 NOR REC 0.8430 NOR PRE= 0.551+7 NOR [OCRerr][OCRerr]=o.s94s NOR PRE o.6068 Cosine Logical Correlation Abstract Suffix `s' Stem Thesaurus - 3 R P R P R P 0.1 0.7589 0.1 0.7219 0.1 0.7769 0.2 0.5869 0.2 0.6142 0.2 o.6448 0.3 o.46[OCRerr] 0.3 0.4898 0.3 0.5386 o.4 0.3778 o.4 0.3992 o.4 0.4582 0.5 0.3257 0.5 0.3367 0.5 0.3660 0.6 0.2672 0.6 0.2796 0.6 0.3106 0.7 0.2266 0.7 0.2277 0.7 0.2483 o.8 o.i[OCRerr]oo o.8 0.1768 o.8 0.1988 0.9 o.14[OCRerr] 0.9 0.1217 0.9 0.1470 1.0 o.o858 1.0 0.0687 1.0 0.0981 RNK REC= 0.1611 RNK R[OCRerr]= 0.1457 RNK REC 0.1837 LOG PRE 0.5239 LOG PRE 0.5198 LOG PRE= 0.5481 NOR REC= 0.8707 NOR REC-- 0.8777 NOR REC= 0.9067 NOR PRE 0.6134 NOR PRE 0.6167 NOR PRE 0.6574