Sublim : un systeme universel de bases lexicales multilingues et Nadia : sa specialisation aux bases lexicales interlingues par acceptions

Cette approche generalise certaines methodes interlingues comme celle du projet de traduction multilingue ULTRA, and permet the definition of bases lexicales multilingues ne se basant pas sur une approche par connaissances.

Abstract

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.