SP500215 Design and Evaluation of the CLARIT-TREC-2 System chapter D. Evans R. Lefferts National Institute of Standards and Technology D. K. Harman F' [OCRerr]f I [OCRerr] [OCRerr] m [OCRerr] [OCRerr] I [OCRerr] R[OCRerr] r[OCRerr]m [OCRerr] r S[OCRerr]tti r' g [OCRerr] f[OCRerr] r [OCRerr] [OCRerr] ry [OCRerr] [OCRerr] m [OCRerr] r't[OCRerr]tI [OCRerr] ri 0.0 0.1 0.2 0.3 0.4 0.5 0.5 0.7 0.6 0.9 1 *1 [OCRerr]L*9ry A[OCRerr]g[OCRerr]-ntntIan [OCRerr]v-[OCRerr]ug9 [OCRerr][OCRerr]-6I9i6fl - 0.1655 [OCRerr]II [OCRerr]9I9Vflflt [OCRerr]aoa. [OCRerr] - 0.5 (T[OCRerr][OCRerr][OCRerr]-2 9n9911n9) [OCRerr][OCRerr][OCRerr]rag- Rr9aIaIan - 0.3269 [OCRerr]op 500 9[OCRerr]b[OCRerr]66[OCRerr]. T -0.75 [OCRerr][OCRerr]9[OCRerr]Q9 [OCRerr][OCRerr]aI-Ian - 0.3449 [OCRerr][OCRerr]t6[OCRerr]ati6 Ro[OCRerr]t'[OCRerr]g [OCRerr] Figure 13: Optimized Sample Size and Thesaurus Threshold Results for Automafic Routing 7 Acknowledgements CLARIT team participation in the TREC activities was made possible, in part, by grants from ARPA/MST and CLARIT Corporation. We received valuable assistance from CLARIT-Project-team members Greg Grefenstette, Steve Handerson, and William R. Hersh and from CLARIT Corporation staff Armar A. Arch- bold, Michael Mcinemy, and Nata[OCRerr]a Milic. 150 8 References (Evans et al. 1993] Evans, David A., Lefferts, Robert G., Grefenstette, Gregoryr, Handerson, Steven K., Hersh, William R., and Archbold, Armar A., "CLARIT TREC Design, Experiments, and Results". In Donna Harman (Editor), The First Text REtrieval Conference (TREC-1). MST Special Publication 500-207. Washington, DC: U.S. Government Printing Office, 1993, 251-286; 49[OCRerr] 501.