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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°1o PRECISION
FIGURE 4,826P INDEX LANGUAGES III. l.a (X), IiI.2.a ([OCRerr]), III.3.a
[OCRerr]:1), III.4.a ([OCRerr]), III.5.a (+), III.6.a (O), SEARCH E.
350 DOCUMENTS (Figures 4.820T - 4.825T)