SP500207 NIST Special Publication 500-207: The First Text REtrieval Conference (TREC-1) CLARIT TREC Design, Experiments, and Results chapter D. Evans R. Lefferts G. Grefenstette S. Handerson W. Hersh A. Archbold National Institute of Standards and Technology Donna K. Harman Partitioning 2000-Doc Top 200 "Feature Scoring" Discrimination Do O Ranking via [OCRerr]ctor-Space "Similarity" CLARIT "A" CLARiT "B" Figure 3: Overview of CLARIT-TREC Processing 200 of 2000 5-lOof5O 2000 00 of 2000 Figure 4: Overview of Processing for "Routing" vs "Ad-Hoc" Queries 257