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-9 Range T[OCRerr]ble for the Ex[OCRerr]e Parent -Son Relations Brother Relations Concept Range Concept Range Length Pair Pair Length l[OCRerr]2 3 2 3[OCRerr]l 10 5 2 3[OCRerr]2 1 3 2-4 9 6 3-14 1 Third, the composite hierarchies are constructed from the range table as follows. The hierarchy for number 9 includes all relations whose range-length values are 9 or greater. Two such relationships exist: The hierarchy for number 5 includes four relations: The hierarchy for number 14 includes six relations, two of which overlap. In particular, concept pair (3,1) appears both as a parent-son and as a brother-brother relation. By the precedence rule, however, these concepts