Generating coherent argumentative paragraphs

  • Authors:
  • Michael Elhadad

  • Affiliations:
  • Columbia University, New York, N.Y.

  • Venue:
  • COLING '92 Proceedings of the 14th conference on Computational linguistics - Volume 2
  • Year:
  • 1992

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Abstract

We address the problem of generating a coherent paragraph presenting arguments for a conclusion in a text generation system. Existing text planning techniques are not appropriate for this task for two main reasons: they do not explain how arguments can be linked together in a linear presentation order and they do not explain how the rhetorical function of a proposition affects its wording.We present a mechanism to generate argumentative paragraphs where argumentative relations constrain not only the rhetorical structure of the paragraph, but also the surface form of each proposition. In our approach, a text planner relies on a set of specific argumentative relations to extract information from the knowledge base, to map it to scalar and context dependent evaluations and to organize it into chains of arguments. The same information used for planning is also used by the surface realization component to perform lexical choice at all the levels of the clause (connectives, main verb, adverbial adjuncts, adjectives and determiners). The mechanism is implemented in the ADVISOR II system using FUF, an extended functional unification formalism.