ISR10 Search Request Formulation chapter Joseph John Rocchio Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. 3-29 Document Document Correlation Use r Feedback Rank [OCRerr]umber ___ _____ + _____ 1 167 .46 [OCRerr]ot Relevant 2 166 .43 [OCRerr]ot Relevant [OCRerr] .40 --- [OCRerr] 188 4 221 Relevant .38 5 314 .38 \\ iii 6 55 .37 7 79 .36 [OCRerr] Relevant a) Retrieval Results Using Original Query `11-R Indexingi? Including User Feedback Retrieval Results Results Using Query Using Original Query Modified by User Feedback CorrelaJ[OCRerr][OCRerr][OCRerr] RRaer)ks of Document Ranks of Document Correla- levant [OCRerr]umber ti on Relevant [OCRerr]umber tion Documents I Documents ________ } F[OCRerr]t- 4 221 .3 a 1 1 79 .54 I .36 2 221 .47 13 3 .26 4 3 .33 ,,[OCRerr] 126 15 80 5 .31 17 48 .25 6 80 .30 23 126 j .21 25 48 .17 Recall .976 Recall .991 Precision .728 Precision .928 b) Comparison of Search Results Using Original and Modified Queries Query Processing Using Relevance Feedback for Search Re[OCRerr]uest ?[OCRerr]I[OCRerr]R Indexing7? Figure 3.6