Arguing about planning alternatives

  • Authors:
  • Alex Quilici

  • Affiliations:
  • University of Hawaii at Manoa, Honolulu, HI

  • Venue:
  • COLING '92 Proceedings of the 14th conference on Computational linguistics - Volume 3
  • Year:
  • 1992

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Abstract

In discourse processing, two major problems are understanding the underlying connections between successive dialog utterances and deciding on the content of a coherent dialog response. This paper presents a computational model of these tasks for a restricted class of argumentative dialogs. In these dialogs, each response presents a belief that justifies or contradicts another belief presented or inferred earlier in the dialog. Understanding a response involves relating a stated belief to these earlier beliefs, and producing a response involves selecting a belief to justify and deciding upon the set of beliefs to provide as its justification. Our approach is knowledge based, using general, common-sense justification rules to recognize how a belief is being justified and to form new justifications for beliefs. This approach provides the ability to recognise and respond to never before seen belief justifications, a necessary capability for any system that participates in dialogs involving disagreements.