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-8 Stem Concon Freq. 3-50 K = o.60 R P 0.1 0.8195 0.2 0.6375 0.3 o.56[OCRerr]2 O.[OCRerr] 0.5303 0.5 o.4[OCRerr]9 o.6 0.if321 0.7 0.3932 o.8 0.3526 0.9 0.3129 1.0 0.268[OCRerr] RNK REC 0.3051 LOG PRE= 0.[OCRerr]823 NOR REC= 0.8628 NOR PRZ= o.6566 Cosine Numeric Correlation Title Stem Thesaurus-3 R P R P 0.1 0.8106 0.1 Q.79[OCRerr]+6 0.2 O.61[OCRerr]69 0.2 0.6365 0.3 0.5805 0.3 0.5596 o.1+ 0.5207 O.[OCRerr] 0.[OCRerr]93O 0.5 O.[OCRerr]699 0.5 o.[OCRerr][OCRerr]68 0.6 O.[OCRerr]O05 o.6 0.[OCRerr]l50 0.7 0.3350 0.7 0.3758 o.8 0.28[OCRerr][OCRerr]l 0.8 O.33[OCRerr]7 0.9 0.2+[OCRerr]5 0.9 0.2918 1.0 0.2176 1.0 0.2575 RNK REC= 0.2506 RNK REC 0.2967 LOG PRE O.[OCRerr]277 LOG PRE= 0.[OCRerr]695 NOR REC= 0.8112 NOR REC= 0.8374 NOR PRE 0.6185 NOR PRE= 0.6430