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Synchronisation des connaissances syntaxiques et sémantiques pour l'analyse d'énoncés en langage naturel à l'aide des grammaires d'arbres adjoints lexicalisés

Abstract : A interface between syntax and semantic aims to propose a logical formalization of the relations between the parts of a sentence. This thesis is a proposaI based upon the analysis of problematic linguistic phenomnas in the Lexicalized Tree Adjunct Grammars (LTAG) framework. LTAG is a linguistic formalism which provides two structures of representation, derived tree and derivation tree. The last one is an almost perfect structure to be used as a canvas for semantic analysis. However, the derivation tree cannot represent coindexations in a autonomous way. We based our proposition upon the study of linguistic phenomnas induced by control verbs. ln order to allow their treatment and their complete formalization, we modify the initial LTAG formalism by introducing a new lexical information : the control canvas. !ts purpose is to integrate }nference of missing argumentaI links into a synchronous course of derived trees and derivations trees via a shared forest. We propose a dynamic reconstruction algorithm based on inference rules. These rules are executed during the derivation tree extraction process from the shared forest. As we use tabular technics, we can extract, into a dependancy graph, aU the argumentaI relations described by one shared forest.
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Theses
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http://docnum.univ-lorraine.fr/prive/SCD_T_2004_0205_SEDDAH.pdf
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https://hal.univ-lorraine.fr/tel-01746702
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Submitted on : Thursday, March 29, 2018 - 10:42:57 AM
Last modification on : Wednesday, September 2, 2020 - 11:59:28 AM

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  • HAL Id : tel-01746702, version 1

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Djamé Seddah. Synchronisation des connaissances syntaxiques et sémantiques pour l'analyse d'énoncés en langage naturel à l'aide des grammaires d'arbres adjoints lexicalisés. Autre [cs.OH]. Université Henri Poincaré - Nancy 1, 2004. Français. ⟨NNT : 2004NAN10205⟩. ⟨tel-01746702⟩

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