Barbara A. Norgard

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In this paper we describe and test a two stage algorithm based on a lexical col-location technique which maps from the lexical clues contained in a document representation into a controlled vocabulary list of subject headings. Using a collection of 4,626 INSPEC documents, we create a \dictionary" of associations between the lexical items contained in the(More)
Searching of databases (textual or numeric) is likely to be effective and efficient only if the user is familiar with the classification, categorizing, and indexing schemes (metadata vocabularies) being searched. Therefore, it is obviously beneficial to provide a bridge between the user's ordinary language and the metadata vocabularies of the unfamiliar(More)
The OASIS project is undergoing a complete revamping with the goal of giving it a exible graphical interface, more powerful analysis tools, and broader searching capabilities. A new X Windows interface is being linked to a search and analysis backend written primarily in Emacs Lisp to take advantage of its advanced string processing functions and multiple(More)
The transition from searching in a single database to searching a multiplicity of networked atabases exacerbates some old difficulties in the design and evaluation of retrieval systems and creates new ones. A network environment calls into question the traditional definitions of recall and relevance. Efficient network searching raises questions about where(More)
The growing number and sophistication of online bibliographic and network based information systems is starting to blur the once clear boundaries that separated print documents. Two concepts emerge as a consequence of these developments, rst the union record, an entity which combines multiple catalog records for a single bibliographic item into an extended(More)