IRS13 Correlation Measures chapter K. Reitsma J. Sagalyn Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. The 82 Document ADI Collection Averages Over 35 Requests, Abstracts Thesaurus-i Average Stiles R-S 2 Cosine [OCRerr]rma1ized Recall .6978 .7928 .4645 .8006 )nnaiized Precision .3891 .5981 .2345 .6086 AVERAGE STILES R-S 2 COSINE [OCRerr]ALL PREC S.D. FREC S.D.D. PREC S.D.D. FREC S.D.D. Os .2185 .2524 .6151 .3711 .1612 .3183 .6400 .3534 10 .2090 .2469 .6133 .3744 .1564 .3208 .6399 .3580 15 .2014 .2283 .6037 .3548 .1587 .3056 .6260 .3333 20 .1862 .1904 .5909 .3441 .1570 .2723 .6097 .3222 `25 .1713 .1553 .5628 .3335 .1474 .2198 .5840 .3166 `30 .1580 .i341 .5283 .3082 .1326 .1770 .5527 .3002 `35 .i486 .1290 .4974 .2926 .1107 .i44o .5214 .2926 .4o .1461 .1255 .4678 .2870 .0927 .1288 .4915 .2932 .4[OCRerr] .1489 .1260 .4501 .2891 .0851 .1274 .4663 .2919 .50 .1508 .1275 .4364 .2974 .0798 .1290 .4448 .2960 .55 .1524 .1295 .4236 .2836 .0786 .1289 .4279 .2798 .60 .1515 .1222 .4090 .2764 .0758 .1197 .4097 .2709 .65 .i48i .1130 .3879 .2725 .0743 .1098 .3898 .2680 .70 .1456 .1077 .3595 .2570 .0747 .1020 .3617 .2540 .75 .1438 .1048 .3293 .2406 .0755 .0956 .3319 .2391 .80 .1409 .1026 .3080 .2243 .0760 .0907 .3103 .2245 .85 .1370 .1009 .2853 .2085 .0773 .o868 .2867 .2089 .90 .1317 .0972 .2608 .1953 .0782 .0823 .2616 .1963 .95 .1265 .0932 .2323 .[OCRerr]22 .0791 .0781 .2340 .i844 .00 .1220 .0926 .2029 .1774 .o804 .0755 .2070 .1795 Recall Precision Table (ADI Collection) Table 2