SP500207 Appendix A: TREC-1 Results appendix National Institute of Standards and Technology Donna K. Harman hsults - Australian Computing and Communications Institute Summary Statistics Recall-Precision Curve Run number manual 1 50 Total number 0.8 - Retrieved 8531 Relevant 15459 IRel[OCRerr]ret3l68 0.6 [OCRerr]call Level Averages all Precision 0.6690 LO 0.4610 0.2867 0.1662 0.0839 0.0179 0.0164 0.0000 0.0000 0.0000 [)0 0.0000 [OCRerr]ge precision for all points Avg 0.1547 J age precision for 3 rnediate points 1 0.50, 0.80) Avg 0.1015 Document Level Averages Recall p[OCRerr]recision at 5 docs 0.0093 0.4720 at 15 docs 0.0291 0.4787 at 30 docs 0.0570 0.4713 at 100 docs 0.1474 0.4084 at 200 docs 0.2184 0.3168 Precision 0.4 0.2 - 0 A 0 0.2 0.4 0.6 0. ROC Averages Recall False Alarm Detection 0.00000 0.0557 0.00001 0.0844 0.00002 0.1084 0.00003 0.1237 0.00004 0.1388 0.00005 0.1495 0.00006 0.1599 0.00007 0.1687 0.00008 0.1768 0.00009 0.1844 NORMAL DEVIATE - Detection-False Alarm I I 0.5 0.84 0.98 0 0.001 0.02 3 0.16 y 2 1 ½ 0 -1 -2 -w .3 I __________________ -3 -2 -1 0 2