IRS13 Document Length chapter E. M. Keen Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. V-9 Document 61 looked-up in Thesaurus Dictionary Concept Weight Concept Weiqht Concept Weight Title 4 1 19 1 147 1 only (5 concepts) 8 1 126 1 Additional 4 3 48 1 115 1 Concepts and Weights 8 2 51 1 126 2 added by 19 2 57 1 147 2 Abstract (12 concepts) 42 1 72 1 286 1 A sample of 1 1 5 6 8 28 the additional concepts and 3 1 6 1 10 1 weights 4 24 7 4 12 1 added by full text (109 e concepts) 134 2 147 6 286 17 Cosine Correlation 1. Title only 2 cos = = 0.3651 5 2. Abstract cos = 0.3608 Jm92 3. Full Text 40 cos = = 0.2034 [OCRerr]74 Figure 2 (continued)