Diss.--Münster, 1992. / 1995 d'après la notice de précatalogage. Bibliogr. p. 111-157.

Ce mémoire propose, dans un premier temps, une introduction détaillée de la reconnaissance automatique de la parole avec données manquantes appuyée par de nombreuses références bibliographiques. Il est montré que l'estimation de masques constitue une étape cruciale. En effet, la qualité des masques estimés conditionne les performances du système de reconnaissance. L'amélioration de la fiabilité des masques constitue donc un enjeu important. Dans un second temps, les travaux menés dans le cadre de l'estimation bayésienne des masques de données manquantes sont présentés. D'une part je propose de nouveaux modèles de masques permettant de modéliser les dépendances entre les masques de différents coefficients d'un signal. Ces modèles sont évalués comparativement à un modèle de référence. Les résultats sont présentés en termes d'erreur de masques ainsi qu'en taux de reconnaissance. Les résultats montrent que ces dépendances contribuent à améliorer les taux de reconnaissance et soulignent l'importance du contexte temporel d'un masque. Je présente, dans un second temps, une nouvelle définition de masque: les masques de contribution. Ces nouveaux masques sont évalués comparativement aux masques usuellement utilisés, fondés sur le seuillage du SNR. Je montre que cette nouvelle définition permet d'améliorer l'algorithme de décodage en affinant les intervalles de marginalisation. L’évaluation, dans le cadre de la marginalisation de données et en présence d'un bruit stationnaire, montrent que les intervalles sont considérablement réduits entraînant une nette amélioration des taux de reconnaissance. / This thesis dissertation proposes, as a first step, a detailed introduction to the automatic speech recognition with missing data supported by many bibliographic references. It is shown that the estimation of masks is a crucial step. Indeed, the quality of the estimated masks determines the performance of the recognition system. Improving the reliability of masks is thus an important issue. In a second step, new investigations in the field of Bayesian missing data mask estimation are presented. I propose first new mask models to model dependencies between the masks of different coefficients of a signal. These models are evaluated and compared to a reference model. The results are presented in terms of error of masks, as well as recognition rate. The results show that these dependencies contribute to improving the recognition rate and stress the importance of the temporal context of a mask. Second, I introduce a new missing data mask definition: the masks of contribution. These new masks are evaluated compared to masks commonly used, based on the SNR thresholding. I show how the decoding algorithm can be improved with such a mask definition by refining the likelihood marginalization intervals. The assessment, in the context of data marginalization and in the presence of a stationary noise, shows that the intervals are considerably reduced resulting in a significant improvement of the recognition rate.

Thesis (doctoral)--Freie Universität Berlin. / Bibliography: p. 144-152.

Thesis (M.A.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 214-217).

Diss.--Institut für Romanische Philologie--Marburg--Philipps-Universität, 1995. / Bibliogr. p. 344-364. Index.

Tal-choom is a generic term for various types of Korean mask-dance theatre that have been performed during traditional holidays and festivals over the past three hundred years. Literally 'tal' means mask and 'choom' dance. The purpose of this study is to examine the theatrical conventions of Tal-choom, its development as popular theatre, and its significance in terms of social and political changes in past and present Korea. Four types of Tal-choom continue to exist today, all being derived from their geographic origins. I have chosen to examine the Pong-san Tal-choom, which is the most widely recognized, performed type, and common to the area around north-eastern Korea. In this study, I present not only the nature of Tal-choom and its effect upon its audience but draw parallels with popular theatre. I focus on six main areas: (1) the contemporary context of Tal-choom as popular theatre; (2) the origin and development of Tal-choom; (3) the structure and performance conventions of Tal-choom; (4) the description of the cast, masks, costumes and props; (5) the performer training and the transmission of the oral tradition; and (6) audience participation. In order to convey Tal-choom more vividly, I have also translated and provided a Pong-san Tal-choom scenario. While examining the role of the participating audience and the relationship to ancient fertility festivals in Tal-choom performance, I have drawn an analogy to the Rolling Stones' "Steel Wheels" concert which took place in 1989, as a means of clarifying Tal-choom's strength as popular theatre. I firmly believe that anyone can come to a Tal-choom performance in South Korea with the same confidence he or she brings to a rock concert as an audience member in the West. Through recognition of both the topical uniqueness and the particular characteristics of Tal-choom, this study should enable scholars to embrace more readily the universal nature of theatre. No longer can we, nor should we, ignore the power and influence of the isolated, regional theatre traditions in our study of world theatre. / Graduate

No description available.

No description available.

Thèse doctorat : Images et Systèmes : Villeurbanne, INSA : 2008. / Titre provenant de l'écran-titre. Bibliogr. p. 164-173.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1955. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [182]-190).