IRS13 Scientific Report No. IRS-13 Information Storage and Retrieval Word-Word Associations in Document Retrieval Systems chapter M. E. Lesk Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. ix-4~ Improved in Improved in Improved in Query Association The[OCRerr]aurus Indexing Q079 x Q[OCRerr]OO x Q116 x Q121 x x x Q130 x Q136 x Q141 x x Q145 x x Q146 x Q148 x Q181 x Q189 x Q190 x x Q226 x Q230 x Q250 x Q268 x x Q269 x x Q273 x x Q317 x x x Q360 x Requests with Large Improvement (rank recall up by 0.1) Table 15