The Design and Application of a Domain Specific Knowledgebase in the TACITUS Text Understanding System
نویسنده
چکیده
TACITUS is a text understanding system being developed at SRI In ternational. One of the main components in the system is a knowledge base which contains commonsense and domain specific world knowledge encoded as axioms in a first order predicate calculus language. The prime function o f the knowledgebase is to provide extra-linguistic facts to be used in the resolution of a range of ambiguities such as compound nom inal constructions, definite reference, and in drawing conclusions on the basis of the implicatures in the text. The paper discusses the methodology used in building a knowledgebase for analyzing news reports about terror ist attacks, and demonstrates how it is used in an application extracting information to be stored in a simulated database.
منابع مشابه
TACITUS: The Abductive Commonsense Inference-based Text Understanding System
TACITUS is a natural language processing system that is intended to be general and domain-independent. It performs a syntactic analysis of the sentences in the text, producing a logical form. Next, inferential pragmatics processing is applied to the logical form to solve problems of schema recognition, reference resolution, metonymy resolution, and the interpretation of vague predicates. An ana...
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