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.
III-2~
Average (Mean)
Concepts Per
Documents
200 Documents 6o.6
153 DOCtSe that are 60.9
Sometimes Relevant
h7 Docts. that are
Always [OCRerr]o[OCRerr]-Relevant 59.7
Document length data for Cran-l Collection, using stem dictionary.
Figure 13.