Shows that in advanced information-retrieval applications capabilities for data aggregation, transitive computation and non-first normal-form relational computation are often necessary at the same time. Topics include complex objects; advanced data models; query languages; query formulation; knowledge representation; and query-language syntax.…

Describes Glean, a system which is based on the idea that coherent text contains significant latent information, such as syntactic structure and patterns of language use, which can be used to enhance the performance of information retrieval systems. Proposes an approach to increase the precision of information-retrieval using a supertagger.…

Describes an information-retrieval schema that takes into account linguistic variation based on phrases. Introduces the phrase-retrieval hypothesis to replace the keyword-retrieval hypothesis, and discusses natural-language processing systems; syntactical, morphological, and lexico-semantical normalization; and future work. (Author/LRW)

Introduces characteristics of the sublanguage found in diagnostic messages about automotive equipment failures and discusses a system for minimizing jargon. Proposes using general knowledge sources and evaluates levels of communication accuracy, robustness and efficiency. (AEF)

Discusses the nature of term groupings, phrases, and text windows in full-text documents and computes the statistical significance of windows. Topics include classifying documents within disciplines or on a theory versus practice spectrum; and grammatical characteristics for automatic classification of documents, for information retrieval, and for…