IRS13 An Experiment in Automatic Thesaurus Construction chapter R. T. Dattola D. M. Murray Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. VIII-8 ;½C2 ¼{C2 c[OCRerr]#) ->4<- jmC4 Gm(C8CGf k - .50 k = .70 (a) Graphs resulting from the Similarity Matrices ( Cl,C2,C3 mClIC2~C3 mC2~C3~C7 C2 ,C 3,C7 ) mC4[OCRerr]C5IC6[OCRerr]C8 mC4[OCRerr]C5[OCRerr]C6 mC6?C8 k = .50 k = .70 (b) Complete Subgraphs Derivation of Initial Concept Classes for one Subcollection Fig. 2