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. - 139 - I0O 90 60 7O 6O ,.J ..J U 5o [OCRerr] 4o 3o 2o 0 I0 20 30 -1- i O 4. 510T X 4. 512T --I" 4. 514T 40 50 60 % PRECISION 70 8O go I00 FIGURE 4.516P IOO 0o 80 t J 4o 30 .\ [OCRerr]o Io 0 I0 20 FIGURE 4.517P SFABCH RULES A, C, and D, 20 QUESTIONS, INDEX LANGUAGE I.l.a (FIGURES 4.510T. 4,512T and 4.514T) O X "4- 4. 511T 4. 513T 4. 515T I ' t 30 40 SO 6O 70 eO 90 =00 °/[OCRerr] PRECISION SEARCH RULES, A,C al"[OCRerr]d D, 20 QUESTIONS, INDEX LANGUAGE 1.6,a (FIGURES 4.511T, 4.513T and 4.515T) ..¢ .-...__._