Knowledge-based searching with TOPIC®
J. W. Lehman, Carol Reid · Text REtrieval Conference · 1993
The Verity's product is TOPIC. Topic is a mature commercial-off-the-shelf manual text search program combining the results of human expertise with a powerful search expression language and fast search algorithms. TOPIC's installation use manually or semi-automatically developed libraries of searches (topics), which are instances of the search expression language and which are supplied to all users