IRS13 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-3~ EVALUATION NUMBER AND PERCENTAGE* MEASUR[OCRerr] USED OF INDIVIDUAL REQUESTS COLLECTION DICTIONARY TO DETIBINE TEXT ABSTRACT BOTH MERIT SUPERIOR SUF[OCRerr]RIOR EQUAL ADI Stem Normed. Recall 19 (57e6%) l[OCRerr] ([OCRerr]2.1+%) 2 Normed. Precision 17 ([OCRerr]8.6%) 18 (5i.i;[OCRerr]) 0 35 Requests Thesaurus-i Normed. Recall 20 (58.8%) l[OCRerr] (14i.4[OCRerr]) 1 Normed. Precision 21 (61.8%) 13 (38e2%) 1 * Percentages exclude requests where both equal. Comparison of individual request merit, giving the numbers and percentages of requests favoring text and abstracts on the ADI collection, according to merit assigned by the normalized evaluation measures. Figure 21.