IRS13
Scientific Report No. IRS-13 Information Storage and Retrieval
Document Length
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.
V-39
EVALUATION TEXT TEXT
COLLECTION DICTIONARY [OCRerr]EAsURE INCLUDES WIThOUT
ABSTRACT ABSTRACT
ADI Stem NNormrmeedd: R[OCRerr]cealci1sion :[OCRerr]5[OCRerr][OCRerr]3 :756573[OCRerr]
35
Requests Thesaurus-i Normed. Recall .8206 .8136
Normede Precision .6273 .6223
Performance Resuits comparing full text including abstract
and full text without abstract, on two dictionaries.
Figure 26e