CRANV1P1
ASLIB Cranfield Research Project: Factors Determining the Performance of Indexing Systems: VOLUME 1. Design, Part 1. Text
Testing Techniques
chapter
Cyril Cleverdon
Jack Mills
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.
- 101 -
QUESTION / [OCRerr]/
SEARCH RULE
STARTING TERMS -[OCRerr]
INDEX LANGUAGES ]-
RELEVANT DOCUMENTS 2
LOWEST COORDINATION 3
FOR NON-RELEVANT
DOCUMENTS TO
BE EXAMINED.
INDEX
LANGUAGE
I
2
3
4
5
6
HIGH EXHAUSTIVITY (WEIGHTS 5-10)
COORDINATION LEVELS
1+
R N-R
2
2
2
2
2
2+
R N-R
2
2
2
3+ 4+
R N-R R N-R
25
i
2
2 b[OCRerr]
2 255
Z
R N-R
3g - : ...... '" ..... T ......
bO - . 2 - _.= .......................
[OCRerr]6[OCRerr] , 47- -
I
2
3
4
5
6
MEDIUM EXHAUSTIVITY (WEIGHTS 7-10)
7 2 2
2 7-
20
3o
~5
~7~-
~95
j 26
1
2
3
4
5
6
LOW EXHAUSTIVITY (WEIGHTS 9-10)
j 5
"2 I jO
2 [OCRerr]_ jO
. I ; '°
....... ]-; ....
_..-. IO.
- 10
FIGURE 6.8 RESULTS SHEET FOR QUESTION 181 FOR
INDEX LANGUAGES 1 to 6