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Dominance Constraints in Context Unification

Abstract : Tree descriptions based on dominance constraints are popular in several areas of computational linguistics including syntax, semantics, and discourse. Tree descriptions in the language of context unification have attracted some interest in unification and rewriting theory. Recently, dominance constraints and context unification have both been used in different underspecified approaches to the semantics of scope, parallelism, and their interaction. This raises the question whether both description languages are related. In this paper, we show for a first time that dominance constraints can be expressed in context unification. We also prove that dominance constraints extended with parallelism constraints are equal in expressive power to context unification.
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Contributor : Joachim Niehren Connect in order to contact the contributor
Submitted on : Tuesday, November 16, 2010 - 11:11:03 PM
Last modification on : Tuesday, October 31, 2017 - 2:22:18 PM
Long-term archiving on: : Thursday, February 17, 2011 - 3:16:38 AM


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  • HAL Id : inria-00536820, version 1


Joachim Niehren, Alexander Koller. Dominance Constraints in Context Unification. 3rd International Conference on Logical Aspects of Computational Linguistics 1998 (Postproceedings 2001), 1998, Heidelberg, France. pp.199-218. ⟨inria-00536820⟩



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