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Dynamique d'évolution de graphes de cooccurrences lexicales : application à l'analyse de comptes rendus en prévention spécialisée entre 1972 et 2010

Dominique Dion 1
1 COGNITIQUE
IMS - Laboratoire de l'intégration, du matériau au système, Ecole doctorale : Sociétés, Politique et Santé publique
Abstract : These last ten years, the study of networks youngs-worlds showed a big stability of certain metrics stemming from the graph theory formal. It concerns the analysis of networks translating activities of the man: networks of phone conversations, air connections, Web browsing, structure of the linguistic lexicons, but also broadcast networks of the epidemics or networks of social relationships. On the other hand, few studies concerned the analysis of the dynamics of these graphs and their evolution in time. It is this approach which we develop in this document. We are interested here in graphs obtained from professional reports of social workers. These graphs model the co-occurrences of the words within the sentences. Our analysis concerns a professional lexicon and an evolution of its use(custom) over a period of about 40 years. Having established(constituted) our material(equipment) from written texts (approximately 1500 typed pages), this corpus of study was quantified, verified, homogenized and treated orthographiquement on a semiautomatic mode. Then this normalized(standardized) corpus gave rise to the constitution of a global graph for complete period, and about forty graphs for each of the studied sub-periods. It is those that carries(wears) the analysis of the dynamics of evolution of graph stemming from a professional lexicon. In the end, our work allows to clock(point,stick) the existing paradox, enters on one hand the constraint of writing bound(connected) to an object which changes only little in the nature of its mission (the work of a street worker) and on the other hand the permissiveness of the oral language which does not stop evolving ( the professional language). Besides our approach proposes a certain automation to clear(release) the main part of one " to say professional " in a corpus of reports.
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Dominique Dion. Dynamique d'évolution de graphes de cooccurrences lexicales : application à l'analyse de comptes rendus en prévention spécialisée entre 1972 et 2010. Informatique. Université Victor Segalen - Bordeaux II, 2012. Français. ⟨NNT : 2005⟩. ⟨tel-00842790⟩

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