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.
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°Io PRECISION
FIGURE 4. 912P PLOT OF HESULTS FOR THREE LEVELS OF EXt-IAUSTIVITĄ
OF INDEXING, FOR TITLES AND FOR ABSTRACTS, ON
42 QUESTIONS, 200 DOCUMENT COLLECTION, INDEX
LANGUAGE I. 3. a