Elaboration d'un algorithme d'unification après présentation de la notion de ramification. Cet algorithme peut aussi être utilisé dans le cadre de la transformation de programmes. Puis étude d'un système d'analyse linguistique dans lequel est intégré l'algorithme.

La recherche présentée dans le cadre de ce mémoire porte sur le développement de la Théorie linguistique de la traduction telle qu’élaborée par des traducteurs soviétiques à partir des années 1950. Ce mémoire vise à démontrer les particularités de l’évolution des connaissances traductologiques sous la pression politique, idéologique et institutionnelle du régime soviétique (1922-1991). En particulier, le travail cherche à expliquer les raisons qui ont abouti à l’isolement théorique de la traductologie russe. À partir de la théorie du polysystème littéraire d’Even-Zohar et de son analyse de la structure des systèmes littéraires, ce mémoire examine la structure et l’évolution des différents facteurs (producteur, institutions, produit, répertoire, marché) qui ont façonné la configuration spécifique de la Théorie linguistique de la traduction en tant que produit du système soviétique de traduction, tel qu’il se développe dans les conditions particulières du polysystème littéraire soviétique. L’analyse des travaux des auteurs dits « canonisés » de l’approche linguistique russe (Fyodorov, Retsker, Švejtser, Barkhoudarov, Komissarov) permet de montrer comment la Théorie linguistique de la traduction s’est imposée comme la seule théorie capable de survivre au contexte soviétique de pression idéologique et de contrôle total du régime communiste. Ce sont ces facteurs qui expliquent aussi le décalage théorique et institutionnel observé entre les traductologies russe et occidentale. / The research presented in this work focuses on the development of the Linguistic Theory of Translation as initially formulated by Soviet translators in the 1950s. The goal of this study is to analyse the particular evolution of translation scholarship in the Soviet era (1922-1991) in a context of political, ideological and institutional pressure and control. Besides, this work seeks to clarify the reasons why the Russian approach to translation became isolated from other theoretical developments in the field. Based on Even-Zohar’s theory of literary polysystem and his analysis of the structure of literary systems, this thesis examines the various factors (producer, institutions, product, repertoire, market) whose changing configuration conditioned the development of the Linguistic Theory of Translation, as a product of a specific translation system within the Soviet literary polysystem. Our analysis of the works of “canonical” theoreticians of the Russian linguistic approach to translation (Fyodorov, Retsker, Švejtser, Barkhoudarov, Komissarov) shows that the Linguistic Theory of Translation was the only theory that could survive the Soviet context of ideological pressure and total control of the communist regime. These very factors, we also argue, explain the theoretical and institutional gap that separates the Russian Linguistic Theory from Western approaches to translation.

This thesis aims to contribute to the improvement of the paraphrasing competence, or the ability to produce synonymous sentences, of advanced learners of French as a second language (L2). While possessing solid grammatical skills, advanced learners still produce lexical and stylistic errors and experience difficulties in reformulating their discourse. Paraphrasing competence is crucial for a language learner since it helps him to present an idea more clearly or circumvent a lexical gap, while allowing the learner to express the same meaning in multiple ways. The theoretical framework adopted is Meaning-Text lin-guistic theory (MTT), that attaches a great deal of importance to the description of lexical and paraphrastic relations and uses well-developped formal tools for the modeling of these relations. The thesis has two objectives. The first consists in elaborating a methodology for evalua-ting the paraphrasing competence of a speaker. The notion of paraphrasing competence is defined, and a test assessing the ability to paraphrase is created and administered to An-glophone learners of French and native speakers. Quantitative and qualitative criteria to establish four levels of paraphrasing competence – elementary, intermediate, advanced and superior - are identified. Characteristics of advanced learners’ paraphrasing competence are described. While pro-ducing all types of paraphrases, the L2 learner uses less lexico-syntactic paraphrasing operations, such as synonymic, antonymic or derivative substitutions. His paraphrasing means are less diverse than those of a native speaker. He also produces a high number of paraphrases with lexical and syntactic errors. The second objective of the thesis is to propose a didactic method of teaching paraphrase, taking into consideration the challenges that paraphrasing poses for L2 learners, identified by means of the paraphrasing test. Concepts of the Meaning-Text Theory are presented in a user-friendly format so that the theoretical linguistic knowledge becomes more accessible to L2 learners. A structured and explicit teaching approach is adopted, based on: (i) a selection of key concepts pertaining to the paraphrase and their definitions ; (ii) a selection of MTT paraphrasing rules and their explanation; (iii) paraphrasing exercices.The advocated pedagogical approach may serve as a reference tool for paraphrase didactics in French.