IRS13
Scientific Report No. IRS-13 Information Storage and Retrieval
Test Environment
chapter
E. M. Keen
Harvard University
Gerard Salton
Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government.
COLLECTION AND
DICTIONARY
-, Abstract, Thesaurus-2
3, Abstract, Thesaurus-3
-1, Abstract, Thesaurus-3
Abstract, Thesaurus-i
SPECIFIC REQUESTS GENERAL REQUESTS
Average Rank of Number Average Rank of Number
First Second of First Second of
Relevant Relevant Requests Relevant Relevant Requests
I I 8
9 1.1 2.1
I I 17
17 1.1 2.[OCRerr]
I I
3.9 8.8 21
I I
2.3 7.9 18
1.1
g.[OCRerr] 20.0
5.1 10.6 21
6.5 I 18.2 17
mparison of Specific and General Requests using the Average Rank Position of the First and
Second Relevant Documents to represent High Precision Need, (Thesaurus Dictionary)
Fig. 20