In this paper, we propose a syntax-based text retrieval system for on-line language learning and use a fast regular expression search engine as its main component. Regular expression searches provide more scalable querying and search results than keyword-based searches. However, without a well-designed index scheme, the execution time of regular…

Discusses the confusion among end users in using Boolean operators when searching electronic resources. Highlights include search engines; site-specific search engines; the counterintuitive nature of Boolean logic; hidden defaults; the problem of conceptualization; reprogramming defaults; and a lack of user education. (LRW)

Reports on patterns and sequences of query reformulation based on query logs from a Web search engine. Results show that while most query reformulation involves content changes, about 15% of reformulation is related to format modifications. Six patterns of query reformulation emerged as a result of sequence analysis: specified, parallel,…

These proceedings document the fifth year of the "Brick and Click Libraries Symposium", held annually at Northwest Missouri State University in Maryville, Missouri. Thirty five peer-reviewed papers and abstracts, written by academic librarians, and presented at the symposium are included in this volume. Many of the entries have…