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Habilitation à diriger des recherches

Approches empiriques et modélisation statistique de la parole

Adda Gilles 1
1 Traitement du Langage parlé
LIMSI - Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur
Abstract : This paper describes both a career path in statistical language modeling and its application to multilingual language processing systems, where I relate my research during 28 years, in a diachronic presentation according to some broad headings, and a statement to establish a theoretical and practical framework to bring out an empirical science of speech. This science should be based on the contribution of all the sciences, from automatic processing to linguistics, whose object of study is the speech. Central to this re-convergence is the idea that automatic systems can be used as instruments to explore large amounts of data at our disposal and to derive new linguistic knowledge which, in turn, will allow to improve the models used in the automatic systems. After a historical perspective, which is recalled the establishment of the evaluation paradigm and development of statistical modeling of speech resulting from the information theory, and criticisms that these two major facts have generated, we discuss some theoretical and practical points. Some epistemological questions concerning this empirical science of speech are discussed: what is the status of knowledge we produce, how to describe it in relation to other sciences? is it possible to empower the language sciences in a real science, trying to find both its observable and the way to improve the observations, and draw generalizable knowledge? We detail in particular the definition of the observable, and the study of the residual as a diagnostic of the gap between modeling and reality. Practical proposals are then exposed, on the structuring of scientific production and the development of instrumental centers for the sharing of development and maintenance of these complex instruments which are automatic speech processing systems.
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Habilitation à diriger des recherches
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Adda Gilles. Approches empiriques et modélisation statistique de la parole. Interface homme-machine [cs.HC]. Université Paris Sud - Paris XI, 2011. ⟨tel-00667961⟩

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