ISR11
Scientific Report No. ISR-11 Information Storage and Retrieval
Relevance Feedback in an Information Retrieval System
chapter
W. Riddle
T. Horwitz
R. Dietz
Harvard University
Gerard Salton
Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government.
v'-37
Results for Query No.9 [OCRerr]A9A[OCRerr]YSIS
Document
No. Name Relevant Correlation
39 51ThESEARCH .43301270
47 lll6RETRIEVA .42135049
11 lll7[OCRerr]ŁAN[OCRerr]NG .40209035
62 809A MECHANI .39900373
12 lII3THE MATE .34815531
2 814A NEW ERR .34299717
4 30Th0LE OF / .32478490
17 3OIDOCUMENT .32075015
9 206MIALYs1s .29329423
23 815A FACET A .29329423
27 5041s RELEVA .28867513
21 1209SCIENCE .28724249
1 lIO4THE IBM .28647316
71 lO8SEARCHERS .28517591
70 6OIENCODING .28306926
N
Query(l) = Query(O) + Alpha z
WEIGHT( I)
1=1 (1)
* Document of Rank I
Document Rank 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Weight
Alpha = 2
(a) Initial Results (Cosine Correlation)
Unsuccessful Use of Negative Weighting
There are two relevant documents in the collection.
Figure 5