ISR11 Design Criteria for Automatic Information Systems chapter M. E. Lesk G. Salton Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. Harris Three Harris Three ox x[OCRerr] Harris 3 - Parents All Harris 3 - Sons Request PRECISION PRECISION .0- 0 1.0 - 0 [OCRerr]x0\[OCRerr]0\ 0.8- 0.8 - x[OCRerr]0[OCRerr] x[OCRerr] o x[OCRerr] [OCRerr] 0.6- 0.6 - 0.4 - 0.4 - 0.2 - 0.2- I j I I a I U I 0 0.2 0.4 0.6 0.8 1.0 RECALL 0 0.2 0.4 0.6 0.8 1.0 RECALL a) Hierarchy Expansion b) Hierarchy Expansion by Parents by Sons Sample Hierarchy Procedures (I RE-2 I? Requests) Fig. 13