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.
1-32
0.00005
0.0001
0.0002
0.0005
0.001
0.002
C
u-
0.00~
0.01
0.0[OCRerr]
0.05
0.1
0.2
Requests searched on IRE-I collection
Requests searched on IRE-3 collection
L
0.5
l.C
0.1 0.2 0.3 0.4 0.5
Recall
0.6 0.7 0.8 0.9 1.0
IRE Collections, Abstracts, Stem Dictionary, Micro Averages
over 17 Requests, Pseudo-Cranfield Cut-off
Performance Comparison of the 17 Staff preferred Requests
Search on the two Document Collections.
Fig. l[OCRerr]