David Sadek

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We propose an architecture of an embodied conversational agent that takes into account two aspects of emotions: the emotions triggered by an event (the felt emotions) and the expressed emotions (the displayed ones), which may differ in real life. In this paper, we present a formalization of emotion eliciting-events based on a model of the agent's mental(More)
Recent research has shown that virtual agents expressing empathic emotions toward users have the potentiality to enhance human-machine interaction. To identify under which circumstances a virtual agent should express empathic emotions , we have analyzed real human-machine dialog situations that have led users to express emotion. The results of this(More)
Remerciements Pour commencer cette thèse, voici la traditionnelle page de remerciements, qui a nécessité plus de temps d'écriture que tout le reste du manuscrit... Tout d'abord je voudrais remercier mes rapporteurs, Yves Demazeau, John-Jules Meyer, et Catherine Pelachaud pour avoir accepté de relire mon manuscrit et pour leurs nombreux commentaires qui(More)
Recent research has shown that virtual agents expressing empathic emotions toward users have the potential to enhance human–machine interaction. To provide empathic capabilities to a rational dialog agent, we propose a formal model of emotions based on an empirical and theoretical analysis of the users’ conditions of emotion elicitation. The emotions are(More)
RÉSUMÉ. Dans cet article, nous proposons un modèle computationnel d'émotions distinguant les émotions déclenchées par un évènement, de celles exprimées, souvent différentes lors d'interactions interpersonnelles. Plus précisément, nous présentons une modélisation et une formalisation des émotions déclenchées, fondées sur un modèle d'état mental d'un agent(More)
In this article, we present a coding scheme that enables one to annotate dialogs that lead to emotions. It is constructed from a study of sequences of events that triggered user's emotions in real vocal human-machine dialog corpora. Its analysis is based on appraisal theory of emotions. The coding scheme is specifically designed to easily integrate the(More)
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