TAILIEUCHUNG - Báo cáo khoa học: "Language Production: the Source ofthe Dictionary"

Ultimately in any natural language production system the largest amount of human effort will go into the construction of the dictionary: the data base that associates objects and relations in the program's domain with the words and phrases that could be used to describe them. This paper describes a technique for basing the dictionary directly on the semantic abstraction network used for the domain knowledge itself, taking advantage of the inheritance and specialization machanisms of a network formalism such as r,L-ON~ The technique creates eonsidcrable economies of scale, and makes possible the automatic description of individual objects according to. | Language Production the Source of the Dictionary David D. McDonald University of Massachusetts at Amherst April 1980 Abstract Ultimately in any natural language production system the largest amount of human effort will go into the construction of the dictionary the data base that associates objects and relations in tire program s domain with the words and phrases that could be used to describe them. This paper describes a technique for basing the dictionary directly on the semantic abstraction network used for the domain knowledge itself taking advantage of the inheritance and specialization machanisms of a network formalism such as KL-ONE. The technique creates considerable economics of scale and makes possible the automatic description of individual objects according to their position in the semantic net Furthermore because the process of deciding what properties to use in an object s description is now given over to a common procedure we can write general-purpose rules to for example avoid redundancy or grammatically awkward constructions. Regardless of its design every system for natural language production begins by selecting objects and relations from the speaker s internal model of the world and proceeds by choosing an English phrase to describe each selected item combining them according to the properties of the phrases and the constraints of the language s grammar and rhetoric. To do this tire system must have a data base of some sort in which the objects it will talk about are somewhow associated with the appropriate word or phrase or with procedures that will construct them . 1 will refer to such a data base as a dictionary. Every production system has a dictionary in one form or another and its compilation is probably the single most tedious job that the human designer must perform. In the past typically every object and relation has been given its own individual lex property with the literal phrase to be used no attempt was made to share criteria or .

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