CRANV2 Aslib Cranfield Research Project: Factors Determining the Performance of Indexing Systems: Volume 2 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. - 174 - Io0 95 90 85 80 75 70 65 6O -.I 55 ._I [OCRerr] so rf [OCRerr] 4s 4o 35 30 2s 20 15 Io 5 0 k \ \\ \I \,\ \ %k:-, [OCRerr]-'- [OCRerr] '\, 5 I0 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 I00 °Io PRECISION FIGURE 4.816P INDEX LANGUAGES III.l.a (X), III.2.a ([OCRerr]). III. 3.a ([OCRerr]). III.4.a (<[OCRerr]), III.5.a ([OCRerr]-). III,6,a (O). SEARCH E. 200 DOCUMENTS (Figures 4. 810T - 4. 815T)