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. - 99 - 9O ::!i;i iili FIGURE 4. 141P 8G 5O 4O 2O 10 0.001- " ...... 6;01 RECALL/FAIA.,OUT PLOT OF RESULTS FOR INDEX LANGUAGE 1. 1. a FOR 42 QUESTIONS ON 145J [A')CUI[OCRerr]IENT AN[) 200 DOCUh'IENT COLI,ECTION : 0.1 "T.o "'Io FALLOUT )_1 FIGURE 4. 142P RECALL/ADJUSTEI) PRECIS!ON PLOT OF I[OCRerr].ESUI/YS FOR INDEX LANGUAGE I. 1. a FOR 42 QUESTIONS ON 1400 DOCUMEI[OCRerr] AND 200 I)OCUMENT COLLECTION -]- I )[OCRerr] 200 document collection O .... 1400 document collection t I \ °/o PRECISION