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.
111-241
NUMBERS OF RELEVANT DOCUMENTS
WITH RANK CHANGES IN RANGES:
1-5 6-b 11-20 21-30 31-240 24i-5o 51-75 76-100
NUMERIC SUPERIOR 324 12 10 10 6 6 24 3 Total 85
LOGICAL SUPERIOR 32 10 11 10 5 3 1 0 Total 72
Changes in rank positions between numeric and logical of 157 of the individual
documents relevant to the 242 requests, Cran-l collection, stem dictionary,
cosine correlation.
Figure 25.