CRANV2
Aslib Cranfield Research Project: Factors Determining the Performance of Indexing Systems: Volume 2
Methods for presentation of 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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Coordination
Level
1
2
3
4
5
Recall Fallout
Ratio l%atlo
X Y X kT
95. 0% 69. 3% 59. 196% 9. 598%
77. 1% 55. 0% 23. 841% 2. 828%
57. 1% 40. 0% 6, 551% 0. 790%
40. 7% 26.4% Z. 543% 0. 108%
27. 9% 23.6% 0. 337% 0. 061%
1oo
,9o
60
"/=
K
E
C 5o
A
L
L
40
0"1
FIGURE 3, 5TP
TABLE AND PLOT OF FALLOUT RATIOS DERIVED
FROM FIGURES 3.3T and 3. 4T FOR SEARCH X (CON[OCRerr]I'INUOUS
LINE} [OCRerr]ND SEARCH Y (BI[OCRerr]OKEN LINE)