Maureen Prettyman

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The National Library of Medicine's (NLM) IRVIS project has been evaluating "similarity ranking" algorithms that reorder search results according to their similarity to a target result. Several variations of known ranking algorithms were tested, as well as one (we believe) new one which weights terms based on word length. When the algorithms were evaluated(More)
The U.S. National Library of Medicine (NLM) has created a metasearch engine called the NLM Gateway at the URL "". The Gateway allows the user to issue one search that takes place on multiple NLM retrieval engines. A composite result set is presented in several categories of information: journal citations; books, serials and audiovisuals;(More)
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