Developing a natural language interface to complex data
ACM Transactions on Database Systems (TODS)
Natural Language Processing: An Introduction to an Emerging Technology
Natural Language Processing: An Introduction to an Emerging Technology
Pattern-Directed Inference Systems
Pattern-Directed Inference Systems
Mycin: a rule-based computer program for advising physicians regarding antimicrobial therapy selection.
Cooperative responses from a portable natural language data base query system.
Cooperative responses from a portable natural language data base query system.
Semantic interpretation against ambiguity
Semantic interpretation against ambiguity
The organization of knowledge in a multi-lingual, integrated parser (natural language, translation)
The organization of knowledge in a multi-lingual, integrated parser (natural language, translation)
Semantic acquisition in TELI: a transportable, user-customized natural language processor
ACL '86 Proceedings of the 24th annual meeting on Association for Computational Linguistics
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In this paper we describe a meta level representation used for mapping natural language input into propositions of an expert system. This representation is based on verb classes that are structured hierarchically, with more general information encoded in the top level nodes and more specific information in the lower level nodes. Because of its structure, the representation is able to provide a detailed classification of the propositions, supplying a basis for defining semantics. It allows the system to answer questions about relationships between propositions without inferencing, as well as to answer questions the expert system could not previously handle.