User Comprehension and Searching with Information Retrieval Thesauri

While information retrieval thesauri may improve search results, there is little research documenting whether general information system users employ these vocabulary tools. This article explores user comprehension and searching with thesauri. Data were gathered as part of a larger empirical query-expansion study involving the ProQuest‚ Controlled Vocabulary. The results suggest that users’ knowledge of thesauri is extremely limited. After receiving a basic thesaurus introduction, however, users indicate a desire to employ these tools. Themost significant result was that users expressed a preference for thesauri employment through interactive processing or a combination of automatic and interactive processing, compared to exclusively automatic processing. This article defines information retrieval thesauri, summarizes research results, considers circumstances underlying users’ knowledge and searching with thesauri, and highlights future research needs. [Article copies available for a fee from The Haworth Document Delivery Service: 1-800-HAWORTH. E-mail address: Website: © 2004 by The Haworth Press, Inc. All rights reserved.]