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. - 183 - FIGURE 4. 709T Index Language II.10.a (Simple Concepts. Second alpllabetical collateral (selected). Coordination. ) Exhauativlty of Indexing 3 Search Hale A Document Relevance 1 - 4 Number of Documents in CoLLection 200 {Subset 1) Number of Questions 42 (Subset 2) Number of Relevant Documents 198 Generality Number 23, 6 Coord - Documents RecaLL ination Retrieved Precision Fallout Level Ratlo Rel. Noa-rel. Ratio a/a+c Ratio a/a+b b/b+d y 1 182 2 2,892 129 91.0% e5.2% 5.9% 35.268% 42 4[OCRerr] 42 3 942 79 253 12.0% 40.0% 11.488% 23.0% 32 3.085% 41 41 34 88 4 38 27 5 44 13.6% 38.0% 3.5% 0.536% 18 32 32 6 7 8 1 0 53.8% 0.5% 0.073% lOO. O% 0 20 0.000% 20 1 9 7 9 0 0 0 3 8 FIGURE 4. 710T Index Language II. ll.a (Simple Concepts. Species, superordinate, co-ordinate, collateral, Exhaustivity of IndexIng 3 and second alphabetical collateral {selected}. Coordinat- Search Hale A ion) Document Relevance I - 4 Number of Documents in Collection 200 (Subset 1) Number of Questions 42 (Subset 2) Number of Relevant Documents 198 Generality Number 23.6 Coord- Documents Reca[OCRerr] Precision Inatloo Fallout Retrieved Ratio Level Ratio Ratio Rel. Non-rel. a/aśc a/a+b x y a b/b+d I 183 92.4% 2 3,317 146 1,259 [OCRerr].2% 73.7% 40.451% 42 10.4% 42 42 41 3 41 94 15.350% 41 408 47.5% 18.72% 4.074% 37 38 38 4 34 99 17.2% 25.8% 1.207% 19 5 14 32 25 7.1% 33 35.9% 0.305% 6 9 20 20 3 1 1.5% 75.0% 0,012% 3 0 8 7 0 o 0 3 3 FIGURE 4.7lIT Index Language II. 12.a (Simple Conccpt[OCRerr], Species (complete). Coordination) Exhauatlvlty of Indexing 3 Search Rule A Document Relevance 1 - 4 Number of Documents in Coliection 200 (Subset l) Number of Questions 42 (Subset 2) Number of Relevant Documents 108 Generality Number 23.6 Coord- Documents lnation RecaLL Retrieved Precision FaLlout Level Ratio Rel. Non[OCRerr]rel. Ratio a/a+c Ratio a/a,b y = b/b+d x 1 128 2 1,432 84.6% 72 6.2% 36.4% 17.483% 42 42 42 3 287 27 32 20.1% 13.6% 3.500% 45.8% 34 41 0.390% 41 13 38 38 4 8 5 3 0 4.5% 75.0% 0.037% 5 32 32 8 0 0 0 0 20 20 0 8 9 7 0 0 0 3 3