TAILIEUCHUNG - Báo cáo khoa học: "Syntactic Dependence and the Computer Generation of Coherent Discourse"

An experiment in the computer generation of coherent discourse was successfully conducted to test a hypothesis about the transitive nature of syntactic dependency relations among elements of the English language. | Mechanical Translation August 1963 Syntactic Dependence and the Computer Generation of Coherent Discourse by Sheldon Klein and Robert F. Simmons System Development Corporation Santa Monica California An experiment in the computer generation of coherent discourse was successfully conducted to test a hypothesis about the transitive nature of syntactic dependency relations among elements of the English language. The two primary components of the experimental computer program consisted of a phrase structure generation grammar capable of generating grammatical nonsense and a monitoring system which would abort the generation process whenever it was apparent that the dependency structure of a sentence being generated was not in harmony with the dependency relations existing in an input source text. The final outputs of the system were coherent paraphrases of the source text. An implication of the hypothesis is that certain types of dependency relations are invariant under a variety of linguistic transformations. Potential applications include automatic kernelizing question answering automatic essay writing and automatic abstracting systems. The question of the validity of transitive dependency models for languages other than English should be explored. Introduction This paper sets forth the hypothesis that there is in the English language a general principle of transitivity of dependence among elements and describes an experiment in the computer generation of coherent discourse that supports the hypothesis. The hypothesis of transitive dependency simply stated is that if a word or element a modifies a word b and b modifies c it may be said that a transitively modifies or is dependent on c. Based on this principle it was found possible to design and program a system to generate coherent discourse using both the AN FSQ-32 a large IBM military computer and the IBM 7090. The input to the coherent discourse generator consists of written English text which has been

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