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