CRANV2 Supplementary tests and 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. - 233 - FIGURE 6.14T Coordination Level 2 Exhaustivity 3 Document Relevance 1-4 Number of Documents in Collection Nr[OCRerr]mber of Relevant Documents 198 2OO Search Rule A Number of Questions 42 Generality Figure 23.6 Index Documents R ecall Language Retrieved Ratio Rel. Non -rel. Precision Fall -out x y Ratio Ratio III. 1 136 946 68.7% III. 2 137 1024 69.2% III.3 147 1575 74.2% III.4 148 i661 74.7% III. 5 184 3044 92.9% III.6 187 3482 94.4% 12.6% 11.534% 42 42 42 11.8% 12.485% 42 42 42 8.5% 19.203% 42 42 42 8.2% 20.251% 42 42 42 5.7% 37. 113% 42 42 42 5.1% 42.465% 42 42 42 FIGURE 6.15T Coordination Level 4 Exhaustivit[OCRerr]r 3 Document Relevance 1-4 Number of Documents in Collection Number of Relevant Documents 198 200 Search Rule A Number of Questions 42 Generality Figure 23.6 Index Documents Recall Language Retrieved Ratio Rel. Non-rel. Precision Fall -out x y Ratio Ratio III. 1 36 49 18.2% 42.4% 0.597% 20 III.2 38 53 19.2% 41.8% 0.646% 20 III. 3 43 78 21.7% 35.5% 0.951% 22 III.4 44 82 22.2% 34.9% 1.000% 23 III.5 62 420 31.3% 12,9% 5.121% 19 III.6 72 527 36.4% 12.0% 6.425% 31 34 34 34 34 34 34 34 34 34 34 34 34