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 Indexing Stem The8aurus-1 Thesaurus-2 R P R P R P 0.1 o.8o[OCRerr][OCRerr] 0.1 0.7775 0.1 0.8407 0.2 0.6581 0.2 0.5956 0.2 0.7001 0e3 0e5908 0.3 0.5160 0.3 O.6[OCRerr]72 0.[OCRerr] O.5[OCRerr]98 0.[OCRerr] 0.[OCRerr]59[OCRerr] 0.[OCRerr] 0.5890 0.5 0.5171 0.5 0.[OCRerr]138 0.5 0.5408 0.6 o.if[OCRerr]6 o.6 0.386[OCRerr] 0.6 0.[OCRerr]837 0.7 O.[OCRerr]035 0.7 0.3549 0.7 0.[OCRerr]277 0.8 0.3[OCRerr][OCRerr]9 0.8 0.31[OCRerr]7 0.8 0.3766 0.9 0.3233 0.9 0.2765 0.9 0.3337 1.0 0.2799 1.0 O.2L[OCRerr]21 1.0 0.2937 RNK REC 0.3122 RNK REC 0.2922 RNK REC= 0.3611 LOG PRE 0.if67[OCRerr] LOG PRE 0.[OCRerr]539 LOG PRE 0.5211 NOR REC 0.8897 NOR REC= 0.8629 NOR REC 0.8992 NOR PRE= 0.6831 NOR PRE= 0.6335 NOR PRE= O.709[OCRerr] Cosine Logical Correlation Abstract Stem Thesaurus - 3 R P R P 0.1 0.8209 0.1 0.81[OCRerr]90 0.2 0.6801 0.2 0.7061 0.3 0.5857 0.3 0.623[OCRerr] 0.[OCRerr] o.so86 o.4 0.5610 0.5 0.[OCRerr]3[OCRerr]2 0.5 0.[OCRerr]939 0.6 0.3752 0.6 0.[OCRerr][OCRerr]39 0.7 0.3237 0.7 0.3962 0.8 0.2753 o.8 0.3470 0.9 0.2[OCRerr]23 0.9 0.3024 1.0 0.2059 1.0 0.2597 RNK REC 0.2[OCRerr]65 RNK REC= 0.3026 LOG PRE= O.[OCRerr]329 LOG [OCRerr]E= 0.4789 NOR REC 0.8397 NOR REC= 0.8729 NOR PRE= 0.6377 NOR PRE= 0.6936