IRS13 Search Matching Functions 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. 111-44 Request Q 1[OCRerr]7 8 request concepts, sum of weights 108, sum of squares of weights 1584. Cosine MATCHING CONCEPTS DOCUMENT CONCEPTS Rank Document Numeric Sum of Sum of Sum of Total wts. in Doc.Wts. Total Sum of Squares oi Correlation Doct. x Reqwts Weights Weights 42C R .4421 3 180 3312 48 984 35,424 2 921 .4305 4 156 2736 71 1116 25,488 3 779 e4109 3 192 3456 67 1344 44,64o 4 699 e4081 180 5 3600 61 1308 49,104 5 797 R e3679 5 216 3744 109 2136 65,376 6 34A e3565 5 204 3600 60 1476 64,368 7 916 * 3468 6 132 2160 62 1056 24,480 8 794 R .3444 156 3024 3 io4 1824 48,672 9 683 .3355 4 204 3168 1764 66,96o 77 10 793 R .3325 4 132 2160 54 1020 26,640 15 879 .2896 4 60 864 17 276 5,616 17 795 R .2665 4 48 720 26 336 4, 6o8 27 316 2147 4 6o 864 43 612 10,224 32 33H .2082 6 120 1728 63 1344 43,488 34 672 .1979 4 48 720 40 552 8,352 40 415 .1655 4 48 720 57 780 11,952 43 796 R 1492 4 6o 1008 79 1296 28,800 R = Helevant Document Normalized Recall = 0.9459 Normalized Precision = 0.7610 Results of a single request using numeric vectors and cosine correlation Figure 28