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. Titles, Cronfield Project Word Form 0 Titles, Cranfield Project Worc Language[OCRerr]-2 Language [OCRerr]-2 Abstract, Cranfield Project Word Abstract, Cranfield Project W X[OCRerr]X Form Language [OCRerr] 4 Precision Form Language [OCRerr] - 4 Precision 1.0 0.8 0.6 0.4 - 0.2 0 -V [OCRerr] Recoil 0.2 0.4 0.6 0.8 1.0 CRAN-l, 42 Requests a) Plot constructed by [OCRerr]eyword matching 1.0 0.8 0.6 0.4 0.2 0 0.2 0.4 0.6 0.8 1.0 Rec CRAN-l, 42 Requests b) Plot constructed by a simulated (coordination levels). ranking method and a document output cut-off. Cranfield Project Results Comparing Abstracts and Titles, using Precision Versus Recall Plots Constructed by Two Cut-off Methods. Fig. 17.