IRS13 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-15 AM[OCRerr], LONG, SHORT, EvAL[OCRerr]TI0N 35 REQUESTS 17 REQUESTS 18 REQUESTS DICTIONARY MEAS[OCRerr]RE 4-18 CONCEPTS, 8-18 CONCEPTS, 4-7 CONCEPTS, MEAN 8.o MEAN 10.8 MEAN 5.4 Stem Normed. Recall .7601 .8363 .6883 Normed. Precision .5326 .6191 .4509 Thesaurus 1 Normede Recall .8016 .8352 .7699 Normed. Precision .6069 .6353 e580l Pertormance Results Comparing All the Requests, the Long Requests Only and the Short Requests Only, with Two Dictionaries. Figure 5