ISR11 An Experimental Investigation of Automatic Hierarchy Generation chapter G. Blomgren A. Goodman L. Kelly Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. VIII -18 The Hierarchy Cutoff = C G102 Go t1Grandfather'1 Relationship I [OCRerr] (Father-Son spanning one or more other levels) OGoll:¼1:18 Part 2. Sample Output Using Actual Data The following are samples of output from a run using the actual term- term matrix. These samples are presented in order of decreasing cutoff value. The first example includes the list structure for cutoff value K = 0.20, the level structure for K = 0.20, and the hierarchy graph for K = 0.20; for the other values of K, only the graphs are shown. As an illustration of the transition phenomenon, consider the relation between concepts 75 and 85. When K = 0.20, these concepts are isola[OCRerr]ed; when K = 0.18, 85 is the parent of 75; when K = 0.085, they are brothers.