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. [OCRerr]Title, Stem Title, Stem 0 [OCRerr]Abstroct, Stem Abstract, Stem x 0[OCRerr]0TitIe, Stem Abstract, Stem x \ [OCRerr]x I I O[OCRerr]O[OCRerr]N½[OCRerr] I I 6 ).2 0.4 0.6 0.8 1.0 Recall `-3, 34 Requests Precision Precision 1.0 1.0 0.8 - 0.8 - 0.6 0.6 0.4 0.4 0.2 0.2 I I I I I I I I 0 0.2 0.4 0.6 0.8 1.0 Recall CRAN-l, 42 Requests 0 0.2 0.4 0.6 0.8 ADI, 35 Requests Re( Performance Results Comparing Abstracts with Titles on Three Collections, Stem Dictionary, using Precision Versus Recall Graphs Fig. 6