emotion Papers

Can chatterbots be useful? This work consists in developing or adapting chatterbot software to be used and enhanced by FATEC’s Sao Paulo students. The main target of it is to introduce its technology and the principal concepts of the AIML style, showing how to use it and analyzing about your real utility. The focus is to use a program in multi-user web applications, so the choice is to use the PHP language with MySQL Database. There... Read more

Empathy is seen as the capacity to perceive, understand and experience others' emotions. This notion is often considered as one of the major elements in social interactions between humans. As such, when creating social agents, that are believable and able to engage users in social interactions, empathy needs to be addressed. Indeed, for the past few years, many researchers have been looking at this problem, not only in trying to find ways to perceive the user's... Read more

Embodied conversational agents (ECAs) are designed to provide natural and intuitive communication with a human user. One major current topic in agent design consequently is to enhance their believability, often by incorporating internal models of emotions or motivations. As psychological theories often lack the necessary details for direct implementation, many agent modelers currently rely on models that are rather marginal in current psychological research, or models that are created ad hoc with little theoretical and... Read more

Human beings not only have the ability of logical reasoning, but also can produce, control and express emotions. Making computers have the ability of generating emotions is a challenging task of affective computing. In this paper, we construct an emotion generation model using cognitive maps and show the generated emotions with 3D facial expression animation. This paper first introduces some basic theories about emotion, reviews some typical emotion models and compares their strengths and weaknesses.... Read more

The work discussed in this chapter involves a proposal to add human like attributes (emotions in this instance) to characters in games and virtual worlds to enhance user experience. The chapter begins by defining these computer controlled characters in the context of both games and virtual worlds, followed by a discussion on the human like aspects currently being integrated into these characters by developers. The chapter continues by focusing specifically on a particular case study... Read more

Sensitive Artificial Listeners (SAL) are virtual dialogue partners based on audiovisual analysis and synthesis. Despite their very limited verbal understanding, they intend to engage the user in a conversation by paying attention to the user’s emotions and nonverbal expressions. The SAL characters have their own emotionally defined personality, and attempt to drag the user towards their dominant emotion through a combination of verbal and non-verbal expression. The demonstrator shows the publicly available, fully autonomous SAL system. Read more

Embodied agents are a powerful paradigm for current and future multimodal interfaces yet require high effort and expertise for their creation, assembly, and animation control. Therefore, open animation engines and high-level control languages are required to make embodied agents accessible to researchers and developers. We present EMBR, a new real-time character animation engine that offers a high degree of animation control via the EMBRScript language. We argue that a new layer of control, the animation... Read more

Emotion plays an important role in human communication and therefore also human machine dialog systems can benefit from affective processing. We present in this paper an overview of our work from the past few years and discuss general considerations, potential applications and experiments that we did with the emotional classification of human machine dialogs. Anger in voice portals as well as problematic dialog situations can be detected to some degree, but the noise in real... Read more

The link between affect and student learning has been the subject of increasing attention. Because of the possible impacts of affective state on learning, it is a goal of many intelligent tutoring systems to attempt to control student emotional states through affective interventions. While much work has gone into improving the quality of these interventions, we are only beginning to understand the complexities of the relationships between affect, learning, and feedback. This paper investigates the... Read more

A model of multimodal sequential expressions of emotion for an Embodied Conversational Agent was developed. The model is based on video annotations and on descriptions found in the literature. A language has been derived to describe expressions of emotions as a sequence of facial and body movement signals. An evaluation study of our model is presented in this paper. Animations of 8 sequential expressions corresponding to the emotions - anger, anxiety, cheerfulness, embarrassment, panic fear,... Read more