Sublim: A Universal Lexical Database Manager and Nadia: its Specialisation for Acception Based Interlingual Lexical Database
Sublim : un systeme universel de bases lexicales multilingues et Nadia : sa specialisation aux bases lexicales interlingues par acceptions
Résumé
The aim of this thesis is the definition and development of a multilingual lexical database manager independent from the applications and linguistic theories. It begins with the study of some dictionaries (printed or electronic) and some tools for the management of lexical databases, like, notably, the MULTILEX ESPRIT project, considered as the most advanced effort, although it presents some limitations (transfer-based lexical architecture, linguistic structures coded as feature structures, etc.). The second part of this thesis is dedicated to the definition of SUBLIM, a multilingual lexical database management system which allows the specification of the lexical architecture (organization of the dictionaries), and of the linguistic architecture (organization of the linguistic information inside the dictionaries). This system does not constrain the kind of dictionaries or linguistic structures to be used. The third part of the thesis presents a specialization of this generic system for the management of multilingual lexical databases based on interlingual acceptions: NADIA. This approach is a generalization of some interlingual methods, as the one used in the ULTRA translation system, and an alternative to the knowledge based approach.
Le but de cette these est de definir et developper un systeme de bases lexicales multilingues independant des applications et des theories linguistiques. Elle debute donc par une etude des dictionnaires (imprimes ou electroniques) et des outils de gestion de bases lexicales, avec, notamment, le projet ESPRIT MULTILEX, considere comme l'effort le plus avance, mais qui presente quelques faiblesses (architecture lexicale par transfert, structures linguistiques codees sous forme de structures de traits types.). La deuxieme partie de cette these est consacree a la definition de SUBLIM, un systeme de gestion de bases lexicales multilingues qui permet de specifier l'architecture lexicale (organisation des dictionnaires) et l'architecture linguistique (organisation des informations linguistiques des unites des dictionnaires), sans imposer de contraintes ni sur les types de dictionnaires choisis, ni sur les structures linguistiques utilisees. La troisieme et derniere partie de cette these presente une specialisation de ce systeme generique en un systeme dedie a la gestion de bases lexicales multilingues fondees sur les acceptions interlingues : NADIA. Cette approche generalise certaines methodes interlingues comme celle du projet de traduction multilingue ULTRA, et permet la definition de bases lexicales multilingues ne se basant pas sur une approche par connaissances.
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