IRS13 Scientific Report No. IRS-13 Information Storage and Retrieval 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-16 Overlap Logical Correlation Abstract Stem Thesaurus-l R P R P 0.1 0.8175 0.1 0.8183 0e2 0.6539 0.2 [OCRerr] 0.3 0.5[OCRerr]79 0.3 0.5363 0.[OCRerr] O.[OCRerr]570 o.[OCRerr] [OCRerr] 0.5 O.38£[OCRerr]3 0.5 0.3770 0e6 0.3i[OCRerr]78 o.6 O.3[OCRerr]60 0e7 0.2987 0.7 0.3155 o.8 0.2580 o.8 0.2769 0.9 0.2179 0.9 0.216[OCRerr][OCRerr] 1.0 0.1775 1.0 0.1698 RNK REC 0.2126 RNK REC= 0.1889 LOG PRE= 0.3561 LOG PRE= 0.3163 NOR REC 0.7if23 NOR REC 0.7830 NOR PRE= 0.49oL[OCRerr] NOR PRE= 0.5257