CRANV2
Aslib Cranfield Research Project: Factors Determining the Performance of Indexing Systems: Volume 2
Test Environment
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.
19 -
oo rd inat ton
earch Rules
recision
evice
ocument
elevance
ecall Exhaus -
[OCRerr]evice tivity
1 .1
2
3
2 1
2
3
3 1
2
3
,5 1
2
3
2
3
6+
A B C [ D .
a b ° t d a
1 1 I-2 1-3 1 -4
R P R P R P R P R P R P R P RP RP
II 17 5 33 4 75 4 83
ll 5 8 44
II 3 8 38 5 3 i00 3 i00 5 33
4 83
8 50
8 37
4 83
9 52
9 36
ii 17
II 4
11 3
11 17
17 6
17 4
11 13
28 6
28 4
11 12
33 8
33 4
11 8 4O
11 8 28
5 4 75
11 8 37
11 8 27
5 4 75
9 40
9 28
13
13
5 5 63
19 12 30
19 12 28
5 5 59
19 12 26
22 13 19
5 3 I00 3 i00 5 33
5 3 i00 3 100 5 33
4 75
12 43
12 28
4 71
13 37
13 26
3 44
3 44
3 44
3 44
10 50
10 50
FIGURE 2.10c. THE COMPOSITE TABLE. COORDINATION LEVEL 6+