TAILIEUCHUNG - Báo cáo khoa học: "A MODEL OF REVISION IN NATURAL LANGUAGE GENERATION"

We outline a model of generation with revision, focusing on improving textual coherence. We argue that high quality text is more easily produced by iteratively revising and regenerating, as people do, rather than by using an architecturally more complex single pass generator. As a general area of study, the revision process presents interesting problems: Recognition of flaws in text requires a descriptive theory of what constitutes well written prose and a parser which can build a representation in those terms. Improving text requires associating flaws with strategies for improvement. The strategies, in turn, need to know what adjustments to. | A MODEL OF REVISION IN NATURAL LANGUAGE GENERATION Marie M. Vaughan David D. McDonald Department of Computer and Information Science University of Massachusetts Amherst Massachusetts 01003 ABSTRACT We outline a model of generation with revision focusing on improving textual coherence. We argue that high quality text is more easily produced by iteratively revising and regenerating as people do rather than by using an architecturally more complex single pass generator. As a general area of study the revision process presents interesting problems Recognition of flaws in text requires a descriptive theory of what constitutes well written prose and a parser which can build a representation in those terms. Improving text requires associating flaws with strategies for improvement. The strategies in turn need to know what adjustments to the decisions made during the initial generation will produce appropriate modtfications to the text. We compare our treatment of revision with those of Mann and Moore 1981 Gabriel 1984 and Mann 1983 . 1. INTRODUCTION Revision is a large part of the writing process for people. This is one respect in which writing dtffers from speech. In ordinary conversation we do not rehearse what we are going to say however when writing a text which may be used more than once by an audience which is not present we use a multipass system of writing and rewriting to produce optimal text. By reading what we write we seem better able to detect flaws in the text and see new options for improvement. Why most people are not able to produce optimal text in one pass is an open and interesting question. Flower and Hayes 1980 and Collins and Gentner 1980 suggest that writers are unable to juggle the excessive number of simultaneous demands and constraints which arise in producing well written text. Writers must concentrate not only on expressing content and purpose but also on the discourse conventions of written prose the constraints on sentence paragraph and text .

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