ISR11 Relevance Feedback in an Information Retrieval System chapter W. Riddle T. Horwitz R. Dietz Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. v'-[OCRerr]7 DDD 1' 2' 3' and are relevant documents, but only D1 is ranked in the 15 hi[OCRerr]est correlated documents. Query has been shifted and D and 1 D2 appear ranked in the top 15. Query shifted frrther so that D1,D2, and D now appear in top 15, but 3 D now appears above D 2 1 D3 E4[OCRerr]/,D2 `1/ffi[OCRerr][OCRerr][OCRerr]Q D3 D4 D2 [OCRerr] D1 a) Initial Configuration b) After First Update D3 D4 D2 ½ ½ D1 c) After Second Update (b) Tv70 Dimensional Representation of Query Modification Showing the Shifting OT the Ranks of the Relevant Documents Figure 8 (continued)