SP500215 Appendix A: TREC-2 Results Appendix National Institute of Standards and Technology D. K. Harman suits - University of Central Florida Summary Statistics Run Number UCFIS1-category B, automatic 1 Num of Queries 50 J Total number of documents over all queries 0.8 Retrieved: 50000 Relevant: 2064 Rel[OCRerr]ret: 102 0.6 Recall-Precision Curve [OCRerr]call Level_Averages Recall Precision 0.00 0.0891 0.10 0.0286 0.20 0.0062 0.30 0.0015 0.40 0.0015 0.50 0.0011 0.60 0.0000 0.10 0.0000 0.80 0.0000 0.90 0.0000 1.00 0.0000 3ge precision over all [OCRerr]nt docs[OCRerr] -¼nterpolatedo.00601 Document Level Averages Precision At 5 docs 0.0400 At 10 docs 0.0260 At 15 docs 0.0187 At 20 docs 0.0170 At 30 docs 0.0127 At 100 docs 0.0070 At 200 docs 0.0039 At 500 docs 0.0024 At 1000 docs 0.0020 R-Precision (precision after R docs retrieved (where R is the number of relevant docu- ments)) Exact 0.0128 1 Precision 0.4 0.2 0 0 0.2 0.4 0.6 0.8 Recall Fallout-Recall Curve A 1 0.8 - 0.6 A A _ Level Averages t Recall 0 0.0307 0 0.0339 .0 0.0369 0 0.0314 0 0.0384 0 0.0427 0 0.0427 [OCRerr] 0.0427 [OCRerr]0 0.0436 10 0.0436 )0 0.0439 NORMAL DEVIATE - Fallout-Recall Recall Ol 0.02 0.84 0.98 0. 0.4 0.2 2 0.98 1 0.84 0 0.5 0< -1 0.16 -2 0.02 -3 I I 0.001 -3 -2 -1 0 1 2 3 I [OCRerr] [OCRerr] Y 0 0.05 0.1 0.15 0.2 Fallout x 100