Abstract

The Okapi software used for TREC-3 was similar to that used in previous TRECs, comprising a low level basic search system and a user interface for the manual search experiments, together with data conversion and inversion utilities. There were also various scripts and programs for generating query terms, running batches of trials and performing evaluation. The main code is written in C, with additional material in awk and perl. The evaluation program is from Chris Buckley at Cornell.