Smiling virtual agent in social context

Magalie Ochs

Radoslaw Niewiadomski

Paul M. Brunet

Catherine Pelachaud

pp. 519-532

in: Cognitive Processing 13, 2012.

Abstrakt

A smile may communicate different communicative intentions depending on subtle characteristics of the facial expression. In this article, we propose an algorithm to determine the morphological and dynamic characteristics of virtual agent's smiles of amusement, politeness, and embarrassment. The algorithm has been defined based on a virtual agent's smiles corpus constructed by users and analyzed with a decision tree classification technique. An evaluation, in different contexts, of the resulting smiles has enabled us to validate the proposed algorithm.