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Title:A Model for Temporal References and Its Appliicationin a Question Answering Program
Author(s):Bruce, Bertram C.
Subject(s):Temporal reference
Computer question-answering system
Natural Language Processing
Formal model
Artificial intelligence
Abstract:A formal model is presented which represents the structure underlying temporal references in natural language. Serving as a framework for analysis of tenses, time relations, and other references to time in language, the model consists of a partially ordered set, called "time" and successively defined concepts such as "time-segment", "duration", "time-segment relation", "tense", "reference time", and "tense marker". This model is justified by making informal arguments, by giving English language examples, and by showing that it is a generalization of several other systems. A computer question answering program, "Chronos", which uses the concepts of tense and time-segment relations, illustrates and supports the validity of the model. Chronos is shown to be a simple program which nevertheless can understand most of the temporal meaning in a sentence.
Issue Date:1972
Citation Info:Bruce, Bertram C. (1972). A model for temporal references and its application in a question answering program. Artificial Intelligence: An International Journal, 3, 1-26.
Publication Status:published or submitted for publication
Peer Reviewed:is peer reviewed
Date Available in IDEALS:2010-06-05

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