CRANV2 Methods for presentation of 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. -63 - Coordination Total Relevant Recall Precision Level Relevant Retrieved Ratio Ratio 1 1590 1510 95. 0% 0. 9% 2 1590 1283 80. 7% 2.2% 3 1533 946 59.8% 4. 1% 4 1507 606 40. 2% 7.6% 5 1401 314 22.4% 11.6% 6 1143 154 13. 5% 19.0% 7 991 74 7.5% 25. 5% 8 704 22 3.1% 33.8% 9 546 8 1. 5% 61.5% 10 349 1 0. 3% 100. 0% . too 0o} eo , t I 60 I - ! _J U 50 w or 3o Q, 2O I0 FIGURE 3.25TP i0 20 30 40 50 60 70 80 90 I00 O/o PRECISION TABLE AND PLOT OF RESULTS FOR 221 QUESTIONS TOTALLED BY METHOD 1B[OCRerr] ADJUSTED COORDINATION LEVELS[OCRerr]FOR INDEX LANGUAGE I. 1. a. (INDEX LANGUAGE L 6. a DOTTED L1NE)