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. A r q0 ½ 5 [OCRerr] 2 r = r1+r2 S a) In[OCRerr]tial query (q ), relevant docs. a[OCRerr]nd ninrelevant [OCRerr]ocs. C qi = (ri ,r2) b) Sum of relevant - sum of nonrele[OCRerr] document vectors. r1, 4r- ,2 I,> ½ ½ J)oc. q0 q1 r1 0.71 1.00 0.92 0.92 r2 0.92 0.58 Si 0.71 0.0 Resultant of q[OCRerr] + normalized (sum d) [OCRerr]dUorrelatio ns of query vectors of relevant - sum of nonrelevant). q0 and q1 with doc. vectors. Geometrical Representation Of Relevance Feedback Fi[OCRerr]ure 5.2