TAILIEUCHUNG - Báo cáo khoa học: "A MODULAR APPROACH TO STORY GENERATION"

One way of characterising texts is in terms of the discourse structures on which they appear to be built. Each type of text, or genre, . the sports report, the recipe, the sermon, the proverb, will have associated with it a characteristic organisation of units. In this paper, a general model of the structure of one text type, the story, is described. This model forms the basis of a program which combines the general story structure principles with rules goveming a particular sub-genre, the Old French epic, in order to generate story summaries. INTRODUCTION Over the last twelve years,. | A MODULAR APPROACH TO STORY GENERATION Lyn Pemberton School of Cognitive and Computing Sciences University of Sussex Falmer Brighton BN19QN United Kingdom ABSTRACT One way of characterising texts is in terms of the discourse structures on which they appear to be built. Each type of text or genre . the sports report the recipe the sermon the proverb will have associated with it a characteristic organisation of units. In this paper a general model of the structure of one text type the story is described. This model forms the basis of a program which combines the general story structure principles with rules governing a particular sub-genre the Old French epic in order to generate story summaries. INTRODUCTION Over the last twelve years research in Psychology and Al into narrative structure has been marked by acrimonious disputes over the right to existence of the story grammar approach. The point at issue is whether it is possible as story grammarians suggest to identify structural regularities particular to naưative texts Mandler and Johnson 1980 Pemberton 1987 Shen 1988 or whether any structural regularities should be interpreted rather as world knowledge usable in contexts other than stories Gamham 1983 Wilensky 1980 Yazdani 1982 . The work described in this paper adopts the story grammarian position arguing that a general model of story structure may be used in conjunction with but separate from a model of the story world to generate stories. Moreover a fuller version of such an account of story generation must draw not only on the general story structure model and the story world model but also on aspects of the audience the author the medium of expression and the cultural context. TEXT TYPES People are able to categorise texts into types according to the global conditions of coherence which they perceive at work in texts. Knowledge of the particular structures of each text type is an element of the cultural competence of the speaker hearer enabling him her .

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