SP500215 NIST Special Publication 500-215: The Second Text REtrieval Conference (TREC-2) Design and Evaluation of the CLARIT-TREC-2 System chapter D. Evans R. Lefferts National Institute of Standards and Technology D. K. Harman [OCRerr]ff[OCRerr]ct [OCRerr]f [OCRerr]u[OCRerr]ry [OCRerr] [OCRerr]ijt[OCRerr]m[OCRerr]tic [OCRerr][OCRerr]uti[OCRerr]g Ii :0:1 ci[OCRerr]SrV [OCRerr] [OCRerr]ff[OCRerr]ct [OCRerr]f [OCRerr]u[OCRerr]ry [OCRerr] [OCRerr][OCRerr]rlLI[OCRerr]I [OCRerr][OCRerr]Lhtirlg[OCRerr] [OCRerr] Figure 9: Query-by-Query Analysis of Effect of Query Augmentation on Routing Queries [OCRerr]ft[OCRerr][OCRerr]t [OCRerr]f [OCRerr] [OCRerr] ry [OCRerr] [OCRerr] g m [OCRerr] [OCRerr] t[OCRerr]ti [OCRerr] ri [OCRerr] ijt[OCRerr] m [OCRerr]t i [OCRerr] -0.05 __ ____ ½; -- [OCRerr] - - --------------------------------------------------------- [OCRerr]ff[OCRerr]ct [OCRerr]f [OCRerr] [OCRerr]ugm[OCRerr]rit[OCRerr]ti[OCRerr]ri IVI[OCRerr]riLi[OCRerr]I [OCRerr]usry [OCRerr] Figure 10: Query-by[OCRerr]Query Analysis of Effect of Query Augmentation on Ad-Hoc Queries 148