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. 3-1[OCRerr] r q0 [OCRerr]elevant [OCRerr]ocument images (r[OCRerr]1 ari[OCRerr] r[OCRerr]2) which have o[OCRerr]y slight association. [OCRerr]i[OCRerr]Llre 3.3 r1 r2 r r r 3 4 r1 1.0 .8 .7 .1 .2 r2 1.0 .6 .2 .3 r 1.0 .2 .1 .3 r4 1.0 .8 r5 1.0 a) Lccument-&ccuixient correlations. r1 r2 r[OCRerr] rA r r1 1 1 1 0 0 r2 1 1 0 0 r3 1 0 0 r 1 1 4 r5 1 b) 3inary association matrix associate[OCRerr] withr[OCRerr] i£p(r[OCRerr][OCRerr]r[OCRerr]) >.5) [OCRerr][OCRerr]othetical [OCRerr]oc[OCRerr][OCRerr]ment-[OCRerr]ocument correlations among an assuineW set df relevant docuinents. Figure 3.4