ISR11 Information Analysis and Dictionary Construction chapter G. Salton M. E. Lesk Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. `v[OCRerr]IL6 Harris Three H3 Stat. 1 Harris Three H3 Stat. 1.5 0.1 0.9735 0.1 0.9588 0.1 0.9735 0.2 0.8973 0.2 0.8706 0.2 0.8963 0. 0.82[OCRerr]5 0.3 0.8169 0.3 0.8189 0.7551 o.2+ 0.7836 0.2+ 0.7782 0.5 0.71[OCRerr]6 0.5 0.7205 0.5 0.7137 o.6 0.62+99 0.6 0.6526 0.6 0.6517 0.7 0.6012 0.7 0.6152 0.7 0.6102 o.8 o.55IL[OCRerr] o.8 0.5510 o.8 0.52+92 0.9 0.2+973 0.9 0.5035 0.9 0.5002 1.0 o.2+ii8 1.0 0.2+213 1.0 0.2+201 ~P:cISI0N 0.8 0.7 0.6 Os 1.0 0.9 4 __[OCRerr]<t[OCRerr][OCRerr]% __ [OCRerr] __ _[OCRerr][OCRerr]I __ _ ___[OCRerr][OCRerr]¾¼Th 0.2+ 03 0.2 0.1 0 .1 .2 .3 .2+ .5 .6 .7 .8 .9 1.0 RECALL Comparison Based on [OCRerr]irase Dictionar[OCRerr] (Harris 3) (averages over 17 search requests) Fig. i2+