CRANV2
Aslib Cranfield Research Project: Factors Determining the Performance of Indexing Systems: Volume 2
Simulated ranking and document output cut-off
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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20 30 40 SO 60 70 O0 90 .100
% PI:[OCRerr]ClSION
FIGURE 5.4P PLOT OF RESULTS FOR
INDEX LANGUAGES 1.1 .a AND
1.9.a BY DOCUMENTS OUTPUT
CUT-OFF METHOD, SHOWING
DOCUMENT OUTPUT CUT-OFF
LINES.
x INDEX LANGUAGE I.l.a
o INDEX LANGUAGE 1.9.a