IRS13
Scientific Report No. IRS-13 Information Storage and Retrieval
Search Matching Functions
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.
111-21
NUMBERS OF REI[OCRerr]ANT DOCUMENTS WITh RANK CHANGES
IN RANGES:
1-5 6-b U-20 21-30 31-40 4i-5o 51-75
COSINE SUPERIOR 46 12 15 12 8 1 1
Total 95
OVERLAP SUPKRIOR 31 9 15 4 2 1 0 Total 62
Changes in rank positions between cosine and overlap of 157 of the individual
documents relevant to the 42 requests, Cran-l coliection, stem dictionary,
logical vectors.
Figure U.