Aslib Cranfield Research Project: Factors Determining the Performance of Indexing Systems: Volume 2

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. - 153 - 0 I0 20 FIGURE 4. 844P 80 90 I00 INDEX LANGUAGE III.5.a. SEARCH A (BROKEN LINE) AND SEARCH E. 200 DOCUMENTS (FIGURES 4.804T and 4.814T) 'ААi I i 90: 80: [OCRerr] 6o [OCRerr] so o\ 30 \ 20 I0 I0 20 F]GUHE 4.845P I \ [OCRerr]0[OCRerr]" 30 z,O 5060 70 80 gO I00 А/[OCRerr] PRECISION INDEX LANGUAGE llI. 6.a. SEARCH A (BROKEN LINE) AND SEARCH E. 200 DOCUMENTS (FIGURES 4.805T and 4.815T)