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. nolized Difference 54 32 30 28 26 24 22 20 .18 .16 .14 .12 I0 08 06 04 02 x Title, Stem Normalized 0 Precision Difference O[OCRerr]0 Title, StE Abstroct, Stem .34 - x .32 - X[OCRerr]X Abstract, .30 - .28 - .26 I .24 - .22 - .20 - .18 .16 .14 .12 .10 .08 .06 .04 .02 x [OCRerr] 0 10 3b Individual Request 30 Requests superior on Abstracts by [OCRerr]mounts on plot 10 Requests superior on Titles, by amounts on plot 2 Requests equal on both 0 lO 3C mdiv Req[OCRerr] 30 Requests superior on Abstracts, by amount plot 10 Requests superior on Titles, by amounts 0 [OCRerr] Requests equal on both CRAI[OCRerr]-l, 1+([OCRerr] Requests, Stem Dictionary Graphs of the Magnitudes of the Differences of Individual Requests C[OCRerr]nparing Abstracts and Titles, using the Normalized [OCRerr]valuation Measures F'i[OCRerr]. 10