TAILIEUCHUNG - Báo cáo khoa học: "Generating parallel multilingual LFG-TAG grammars from a MetaGrammar"

We introduce a MetaGrammar, which allows us to automatically generate, from a single and compact MetaGrammar hierarchy, parallel Lexical Functional Grammars (LFG) and Tree-Adjoining Grammars (TAG) for French and for English: the grammar writer specifies in compact manner syntactic properties that are potentially framework-, and to some extent language-independent (such as subcategorization, valency alternations and realization of syntactic functions), from which grammars for several frameworks and languages are automatically generated offline. . | Generating parallel multilingual LFG-TAG grammars from a MetaGrammar Lionel Clement Inria-Roquencourt France Alexandra Kinyon CIS Dpt - Univ. of Pennsylvania kinyon@ Abstract We introduce a MetaGrammar which allows us to automatically generate from a single and compact MetaGrammar hierarchy parallel Lexical Functional GrammarS LFG and Tree-Adjoining Grammars TAG for French and for English the grammar writer specifies in compact manner syntactic properties that are potentially framework- and to some extent language-independent such as subcategorization valency alternations and realization of syntactic functions from which grammars for several frameworks and languages are automatically generated 1 Introduction Expensive dedicated tools and resources . grammars parsers lexicons etc. have been developed for a variety of grammar formalisms which all have the same goal model the syntactic properties of natural language but resort to a different machinery to achieve that goal. However there are some core syntactic phenomena on which a cross-framework and to some extent a cross-language consensus exists such as the notions of subcategorization valency alternations syntactic function. From a theoretical perspective a MetaGrammatical level of representation allows one to encode such consensual pieces of syntactic knowledge and to compare different frameworks and languages. From a practical perspective encoding syntactic phenomena at a metagrammati-cal level from which grammars for different frameworks and languages are generated offline has several advantages such as portability among grammatical frameworks better parallelism increased coherence and consistency in the grammars generated and less need for human intervention in the grammar development process. In section 2 we explain the notion of MetaGrammar MG present the MG tool we use to generate TAGs and how we extend the approach to generate LFGs. In section 3 we .

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