SP500207 Appendix A: TREC-1 Results appendix National Institute of Standards and Technology Donna K. Harman Its - VPI & SU Summary Statistics Run number vpidt2-wsj, diski only, manual 1 Num[OCRerr]queries 50 Total number of documents over all queries 0.8 Retrieved 10000 Relevant 4056 Rel[OCRerr]ret 1371 0.6 - Recall-Precision Curve call Level Averages I Precision 0.5153 0.2841 0.1898 0.1285 0.0988 0.0746 0.0527 0.0338 0.0271 0.0222 0.0222 e precision for all points Lvg 0.1317 e precision for 3 diate points [OCRerr].50, 0.80) vg 0.0972 Precision Document Level Averages Recall Precision 0.4 at 5 docs 0.0476 0.3160 at 15 docs 0.0640 0.2147 0.2 - at 30 docs 0.0843 0.1760 at 100 docs 0.2050 0.1246 at 200 docs 0.4481 0.1371 0 0 0.2 0.4 0.6 0.8 ROC Averages Recall False Alarm Detection 0.00000 0.0391 0.00001 0.0452 0.00002 0.0529 0.00003 0.0522 0.00004 0.0595 0.00005 0.0616 0.00006 0.0607 0.00007 0.0633 0.00008 0.0677 0.00009 0.0661 NORMAL DEVIATE - Detection-False Alarm a I I I 0.01 3 2 1 0 -1 -2 -3 0.02 0.16 0.5 0.84 0.98 0.9[OCRerr] -3 -2 -1 0 2 3