TAILIEUCHUNG - Báo cáo khoa học: "Integrating Text Plans for Conciseness and Coherence*"

Our experience with a critiquing system shows that when the system detects problems with the user's performance, multiple critiques are often produced. Analysis of a corpus of actual critiques revealed that even though each individual critique is concise and coherent, the set of critiques as a whole may exhibit several problems that detract from conciseness and coherence, and consequently assimilation. Thus a text planner was needed that could integrate the text plans for individual communicative goals to produce an overall text plan representing a concise, coherent message. . | Integrating Text Plans for Conciseness and Coherence Terrence Harvey and Sandra Carberry Department of Computer Science University of Delaware Newark DE 19716 harvey Carberry @cis. udel. edu Abstract Our experience with a critiquing system shows that when the system detects problems with the user s performance multiple critiques are often produced. Analysis of a corpus of actual critiques revealed that even though each individual critique is concise and coherent the set of critiques as a whole may exhibit several problems that detract from conciseness and coherence and consequently assimilation. Thus a text planner was needed that could integrate the text plans for individual communicative goals to produce an overall text plan representing a concise coherent message. This paper presents our general rule-based system for accomplishing this task. The system takes as input a set of individual text plans represented as RST-style trees and produces a smaller set of more complex trees representing integrated messages that still achieve the multiple communicative goals of the individual text plans. Domain-independent rules are used to capture strategies across domains while the facility for addition of domain-dependent rules enables the system to be tuned to the requirements of a particular domain. The system has been tested on a corpus of critiques in the domain of trauma care. 1 Overview Many natural language systems have been developed to generate coherent text plans Moore and Paris 1993 Hovy 1991 Wanner and Hovy 1996 Zukerman and McConachy 1995 . However none has the ability to take a set of independently generated yet inter-related text plans and produce integrated plans that realize all of the communicative goals in a concise and coherent manner. RTPI Rule-based Text Plan Integrator was designed to perform this task. The need for coherence requires that the system be able to This work was supported by the National Library of Medicine under grant R01-LM-05764-01. We

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