IRS13
Scientific Report No. IRS-13 Information Storage and Retrieval
Test Environment
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.
1-10
RELEVANCE DECISIONS
Scale of five relevance grades, done
by request preparers (subject experts),
based mainly on full documents, by
examination of entire collection.
Dichotomous, done by request preparers
(staff members), based on abstracts,
by examination of entire collection.
Dichotomous, done by request preparers
(non-staff members), based on abstracts
(IRE-3) and full text (ADI), by ex-
amination of entire collection.
IRE-3 CRAN-l ADI
[OCRerr]42)
\;17)
[OCRerr]l7) ¼(35)
Techniques Used for Obtaining Relevance Decisions
Fig. 5