SP500207 Appendix A: TREC-1 Results appendix National Institute of Standards and Technology Donna K. Harman Lilts - City University, London Summary Statistics Run number citya 1-full, automatic Recall-Precision Curve 1 Num[OCRerr]queries 50 Total number of docu[OCRerr]nents over all queries Retrieved 9989 0.8 - Relevant 16400 Rel[OCRerr]ret 2722 0.6 - ecall Level Averages Document Level Averages Precision Lii Precision Recall Precision 0.4 [) 0.7089 at 5 docs 0.0122 0.4960 [) 0.3855 at 15 docs 0.0298 0.4600 0.2 [) 0.1727 at 30 docs 0.0504 0.4207 [) 0.0594 at 100 docs 0.1276 0.3462 A A [) 0.0089 at 200 docs 0.1892 0.2722 0 [) 0.0000 0 0.2 0.4 0.6 ROC Averages Recall [) 0.0000 False Alarm Detection [) 0.0000 0.00000 0.0379 NORMAL DEVIATE - Detection-False Alarm [) 0.0000 0.00001 0.0555 0.001 0.02 0.16 C 5 0.84 0.98 0. 9 [) 0.0000 0.00002 0.0734 3 [) 0.0000 0.00003 0.0847 [OCRerr]r[OCRerr]cision for all pointsl ½<½ 0.00004 0.0985 2 [OCRerr]vg 0.1214 0.00005 0.1086 [OCRerr]e precision for 3 0.00006 0.1200 Lediate points 0.00007 0.1291 0.50, 0.80) 0.00008 0.1377 0 [OCRerr]vg 0.0576 0.00009 0.1442 -1 -[OCRerr] -2 -3 I II -3 -2 -1 0 2 3