IRS13 Test Environment 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. SPECIAL REQUESTS GE[OCRerr]ERAL REQUESTS Cut-off, n Documents Cut-off, n Documents [OCRerr]rmance fl 1 2 3 4 5 n 1 2 3 `4 5 .[OCRerr],... eved 17 34 51 68 85 17 34 51 68 85 aened 12 21 27 32 38 14 24 37 48 61 elevant 5 13 24 36 47 3 10 14 20 24 eved 1 .09 .16 .21 .25 .30 .03 .05 .08 .10 .13 ut .00038 .00181 .00355 .00023 .00109 .00186 .00098 .00272 .00078 .00155 sion .71 .62 .53 .47 .45 .82 .71 .73 .71 .72 Collection, Abstracts, Stem Dictionary, Micro Averages over 17 Specific and 17 General Requests. Compari[OCRerr]on of Specific and General Requests in the IRE-3 Collection at the First Five Document Cut -offs Fig. 16