CRANV2 Main test results chapter Cyril Cleverdon Michael Keen Cranfield An investigation supported by a grant to Aslib by the National Science Foundation. Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. - 118 - FIGURE 4. 332T Index Language 1.6d (S.T. Synonyms, Quasi-synonyms, Word forms. Coordination, Exhaustivity of Indexing 3 Partitioning. Interftxing) Search Rule B Document Relevance 1 - 4 Number of Documents in Collection 1,400 Number of Questions 19 (Subset 4) Number of Relevant Documents !31 Generality N u[OCRerr]llOcr 4.9 Coord- Documents ! Recall Precision FaLlout Ination Retrieved [OCRerr] [ ] Ratio Ratio Ratio x y z Level Bel, Non-rel. a/a+c a/a+b b/b+d 1 12o (-) 91.6% (.) (.) 19 0 2 19 102 (-) 77.7% (-) (-) 3 19 0 19 64 534* 49.9% 10.7%= 2.017%* 19 7* 19 4 27 148 5 20.6% 15.4% 0.599% 12 19 19 9 11 0.9% 6 45.0% 0.042% 7 19 19 4 5 3.1% 44.4% 0,019% 2 19 10 7 3 0 8 2.3% 100.0% 0.000% 1 19 [9 9 I0 II 12 13 14 I: FIGURE 4.33 3T Index Language 1.6d (S.T. Synonyms, Quasi-synon)[OCRerr]ms, Word forms. Exhaustivity of Indexing 3 . Search Rule B Document Relevance 1 - 4 Number of Documents in Collection 1,400 Number of Questions 17 (Subset 5) Number of Relevant Documents t09 Generality Number 4.6 Coordination. Panic Interf: Coord- Documents P[OCRerr] eca[OCRerr]l Precision Fallout Ination Retrieved Ratio Ratio Ratio x y z Level Re1. Non-rel. a/a+c a/aeb b/b+d 1 lOB (-) 90.1% (-) (-) 17 O 17 2 lO4 (-) 95.4% (-) (-) 17 0 17 3 86 (-) 78. s% (-) (-) 17 0 17 4 67 (-) 01.5% (-) (-) 17 0 17 5 45 416 6 41.3% 9.8% 1.756% 15 17 17 23 141 21.1% 14.o% 0.595% 13 17 17 7 12 25 11.0% 32.4% 8 0.106% 17 6 7 17 19 17 17 9 5.5% 24.0% 0.080% 3 2 0 1.8% 100.0% 0.000% 1 17 17 10 1 0 17 17 I1 0.9% 100.0% 0.000% 1 0 0 17 17 12 0 13 14 15