SP500207 Appendix A: TREC-1 Results appendix National Institute of Standards and Technology Donna K. Harman its - GTE Laboratories Summary Statistics Recall-Precision Curve Run number fairs2-wsj, disk2 only, automatic 1 Num4ueries 50 Total number of documents over all queries 0.8 Retrieved 10000 Relevant 2172 Reljet1188I 0.6 Precision [OCRerr]all Level Averages Document Level Averages 0.4 Precision Recall Precision 0.5538 at 5 docs 0.0592 0.3440 0.4134 at 15 docs 0.1500 0.2947 0.2 0.3582 at 30 docs 0.2355 0.2673 ) 0.3148 at 100 docs 0.4410 0.1876 I I 0 ) 0.2551 at 200 docs 0.5362 0.1188 0 0.2 0.4 0.6 0.8 ) 0.1907 ROC Averages Recall ) 0.1427 False Alarm Detection 0.1086 NORMAL DEVIATE - Detection-False Alarm 0.00000 0.0622 [) 0.0603 0. 0 Ol 0.02 0.16 0.5 0.84 0.98 0.9 0.00001 0.0758 3 () 0.0312 0.00002 0.0873 [) 0.0092 0.00003 0.0873 2 ge precision for all points 0.00004 0.0964 0.2216 0.00005 0.1198 1 ge precision for 3 0.00006 0.1350 [OCRerr]ediate points 0.00007 0.1350 0 0.50, 0.80) 0.00008 0.1421 [OCRerr]vg 0.2030 0.00009 0.1470 -1 -2 -3 I I 3 -2 -1 0 2