Shailaja Venkatsubramanyan

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This paper describes an algorithm that can be used to improve the quality of multiword expressions extracted from documents. We measure multiword expression quality by the " usefulness " of a multiword expression in helping ontolo-gists build knowledge maps that allow users to search a large document corpus. Our stopword based algorithm takes n-grams(More)
Remote sensing satellites are generating large amounts of (image) data at different levels of temporal, spatial and spectral resolution, with varying levels of detail, and at various stages of processing with a variety of algorithms. This bewildering array of data sources is going to mandate a new class of information retrieval systems to help end-users(More)
Search services are now ubiquitously employed in searching for documents on the Internet and on enterprise intranets. Search services may exhibit different behavior depending on the type of information need, the quality of the search service, the ease of filtering results, the user's domain knowledge and search experience. Users are thus faced with the(More)