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. ½' Docum ent Document Correlation User Feedback Rank Number 1 157 42 Relevant 2 40 1 Relevant 165 3 362 . 3[OCRerr] Not Relevant I 4 1 2[OCRerr]6 37 Relevant S 308 .37 Not Relevant * 6 I 307 .37 Not Relevant I 7 226 .36 - 8 1 88 .36 - i I L ___________________ ___________ [OCRerr] a) Retrieval Results Using Original Query `1Analog-Digital1' Including Relevance Feedbacks Retrieval Results Results Using Query Using Ori4nal Query Modified by User Feedback Ranks of I Document Correla- Ranks of Document Correla- Relevant Number tion I Relevant Number tion Documents I I : Documents I ______ I _______ ___ ____ I- __________ _____ I ____________ \\ [OCRerr] ---t 1 157 .42 1 2[OCRerr]6 .58 2 165 .40 2 157 .56 4 2[OCRerr]6 .37 1 3 165 .53 19 42 .27 4 42 .42 46 .20 21 46 .26 40 [OCRerr] I___________ Recall .984 [OCRerr] Recall .983 Frecision .870 J Precision .918 J Query Processing Using Relevance Feedback for Search Request 11Analog-Digital11 Figure 3.9