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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SMART
CRANFIELD NORMALISED
SMART NORMALISED RECALL AND
LANGUAGE RECALL PRECISION
SI 58.64 1.492
$2 61.06 1.546
$3 62.70 1.573
$4 58.58 1.495
$5 62,41 1.573
$6 64.88 1.609
$7 61.82 1.548
$8 63.64 1.594
$9 65.13 1.618
S10 62.94 1.579
Sll 64.94 1.617
S12 63.64 1.593
S13 65.23 1.624
S14 64.82 1.612
FIGURE 5.9T
PERFORMANCE FIGURES FOR SMART LANGUAGES
ORDER CRANFIELD SMART
1 S13 S13
2 $9 $9
3 SII $11
4 $6 S14
5 S14 $6
6 $8 $8
7 S12 S12
8 SI0 SI0
9 $3 $3
10 $5 $5
11 $7 $7
12 $2 $2
13 S1 $4
14 $4 SI
FIGURE. 5.10T COMPARISON OF RANKING OF SMART LANGUAGES BY
CRANFIELD AND SMART NORMALISED MEASURES