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. -60 - Coordination Level Documents Retrieved Rel. Non-Rel. Re call Ratio Precision Ratio 1 302 29,898 94. 7% I. 0% 2 257 i0, 917 80.6% 2. 3% 3 191 3,292 59.9% 5. 5% 4 119 899 37.3% 11.7% 5 47 132 14.7% 26.3% Relevant documents (a + c) = 319 100[OCRerr] ....................... i. 8o i : % 60: E C A L L 40i ..... .... ±.. 0 FIGURE 3.22TP TABLE AND PLOT FOR RESULTS OF 45 QUESTIONS WITH FIVE RETRIEVING TERMS TOTALLED BY COORDINATION LEVELS