Formal constraints on metarules

 
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Stucky, Susan U.
Uszkoreit, Hans
Robinson, Jane J.
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http://www.aclweb.org/anthology/P83-1004
http://dx.doi.org/10.3115/981311.981316
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Stuart M. Shieber, Susan U. Stucky, Hans Uszkoreit, and Jane J. Robinson. Formal constraints on metarules. In Proceedings of the 21st Annual Meeting of the Association for Computational Linguistics, pages 22-27, Massachusetts Institute of Technology, Cambridge, Massachusetts, June 15-17 1983.
Abstract
Metagrammatical formalisms that combine context-free phrase structure rules and metarules (MPS grammars) allow concise statement of generalizations about the syntax of natural languages. Unconstrained MPS grammars, unfortunately, are not computationally "safe." We evaluate several proposals for constraining them, basing our assessment on computational tractability and explanatory adequacy. We show that none of them satisfies both criteria, and suggest new directions for research on alternative metagrammatical formalisms.
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