Iterative Exploration, Design and Evaluation of Support for Query Reformulation in Interactive Information Retrieval.

Reports on the progressive investigation of techniques for supporting interactive query reformulation in the TREC (Text Retrieval Conference) Interactive Track. Highlights include methods of term suggestion; interface design to support different system functionalities; an overview of each year's TREC investigation; and relevance to the development and evaluation of interactive information retrieval systems. (Author/LRW)