TAILIEUCHUNG - Báo cáo khoa học: "Multi-Modal Combinatory Categorial Grammar"

The paper shows how Combinatory Categorial Grammar (CCG) can be adapted to take advantage of the extra resourcesensitivity provided by the Categorial Type Logic framework. The resulting reformulation, Multi-Modal CCG, supports lexically specified control over the applicability of combinatory rules, permitting a universal rule component and shedding the need for language-specific restrictions on rules. We discuss some of the linguistic motivation for these changes, define the Multi-Modal CCG system and demonstrate how it works on some basic examples. . | Multi-Modal Combinatory Categorial Grammar Jason Baldridge ICCS School of Informatics 2 Buccleuch Place University of Edinburgh Edinburgh EH8 9LW UK Geert-Jan M. Kruijff Universitãt des Saarlandes Computational Linguistics Lehrstuhl Uszkoreit Building 17 Postfach 15 11 50 66041 Saarbriicken Germany gj@ Abstract The paper shows how Combinatory Categorial Grammar CCG can be adapted to take advantage of the extra resourcesensitivity provided by the Categorial Type Logic framework. The resulting reformulation Multi-Modal CCG supports lexically specified control over the applicability of combinatory rules permitting a universal rule component and shedding the need for language-specific restrictions on rules. We discuss some of the linguistic motivation for these changes define the Multi-Modal CCG system and demonstrate how it works on some basic examples. We furthermore outline some possible extensions and address computational aspects of Multi-Modal CCG. 1 Introduction The family of categorial grammar frameworks contains a diverse set of formalisms committed to many of the same core principles such as compositionality a strong degree of lexicalism and semantic transparency. Nonetheless each formalism has its own characteristics with respect to the category constructors and rules of combination it employs and the differing kinds of linguistic explanations which arise from its unique assumptions. A formalism s category constructors and combination rules together define its resourcesensitivity. given the resources we have . ex pressions and their associated categories we can or can not apply particular rules to form more complex expressions. It is particularly this idea of resource-sensitivity that is realized differently across different formalisms. In this paper we explain how two prominent categorial grammar frameworks namely Combinatory Categorial Grammar CCG Steedman 2000 and Categorial Type Logic CTL Morrill 1994 Moortgat 1997 .

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