ISR10
Scientific Report No. ISR-10 Information Storage and Retrieval
Search Request Formulation
chapter
Joseph John Rocchio
Harvard University
Gerard Salton
Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government.
1.0
Quasi-Clever[OCRerr]on
.9 Graph
.8
.7
.6 No[OCRerr]ifie[OCRerr]
Initial Querie
Precision .5
.4.
.3.
.2
.1
0
I I I I i I _____ _____I I I
1 .2 3 14 15
Recall
.6 .7 .8 9 11.0
Precision vs Recall for Initial Queries an[OCRerr] Queries Modifie[OCRerr] by
Relevance Feedback (Averaged Over 24 Search Requests)
Figure 3.10