Scientific Report No. IRS-13 Information Storage and Retrieval

IRS13 Scientific Report No. IRS-13 Information Storage and Retrieval An Analysis of the Documentation Requests 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. X-13 Ah, SPECIFIC, GENERAL, EVALUATION 35 RE[OCRerr]UESTS 17 RE[OCRerr]UESTS 18 RE[OCRerr]UESTS DICTIONARY MEASURE 1-33 RELEvANT, 1-3 REI[OCRerr]VANT 4-33 RELEVANT, MEAN 4.9 MAAN 2.1 MAAN 7.4 Stem Normed. Recall .7601 .8018 .7209 Normed. Precision .5326 .5358 .5295 Thesaurus 1 Normed. Recall .8016 .8482 .7576 Normed. Precision .6069 .6126 .6oi6 PerformanceResults C[OCRerr][OCRerr]paring All the Requests, the Specific Requests only and the General Requests only, with Two Dictionaries. Figure 4.