ISR11 Design Criteria for Automatic Information Systems chapter M. E. Lesk G. Salton Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. O[OCRerr]O Abstract Null 0[OCRerr]0 Null Concon Abstracts x[OCRerr]x Index Null x[OCRerr]x Index Null PRECISION PREC SION 0 1.0 0 0.8 0.8 2 x 0.6 0.6 \ox[OCRerr]x 0.4 0.2 0.2 x I a a a RECALL 1.0 0 0.2 0.4 0.6 0.8 a) Manual Indexing a p ` RECALL 0 0.2 0.4 0.6 0.8 1.0 b) Manual Indexing vs Word-Word vs Word Stem Process AssocIations Comparison of Manual Indexihg with Text Processing (Crunfield Collection) Fig. 14