Papers

The evaluation of conversational agents or chatterbots question answering systems is a major research area that needs much attention. Before the rise of domain-oriented conversational agents based on natural language understanding and reasoning, evaluation is never a problem as information retrieval-based metrics are readily available for use. However, when chatterbots began to become more domain specific, evaluation becomes a real issue. This is especially true when understanding and reasoning is required to cater for a... Read more

As access to information becomes more intensive in society, a great deal of that information is becoming available through diverse channels. Accordingly, users require effective methods for accessing this information. Conversational agents can act as effective and familiar user interfaces. Although conversational agents can analyze the queries of users based on a static process, they cannot manage expressions that are more complex. In this paper, we propose a system that uses semantic Bayesian networks to infer the intentions of... Read more

This paper presents some insights into the effect of ‘virtual gender’ on the way people interact with, make sense of, and build relationships with conversational agents. The focus is on the linkage between sex stereotypes and aggression, in the form of verbal abuse towards the machine. Implications for design of embodied conversational agents are discussed. Read more

The rapid evolution of the Internet from a general information space to an electronic market space provides the users with the possibility to navigate among thousands of Web sites for comparing products and merchants, for making their purchases or for obtaining some desired services. However, from the user's viewpoint, such a navigation often requires an high cost in terms of time to spend on the Web to perform a satisfying comparison of the various alternatives.... Read more

There is an extensive body of work on ntelligent Tutoring Systems: computer environments for education, teaching and training that adapt to the needs of the individual learner. Work on personalisation and adaptivity has included research into allowing the student user to enhance the system’s adaptivity by improving the accuracy of the underlying learner model. Open Learner Modelling, where the system’s model of the user’s knowledge is revealed to the user, has been proposed to support student reflection... Read more

The development of robots that closely resemble human beings can contribute to cognitive research. An android provides an experimental apparatus that has the potential to be controlled more precisely than any human actor. However, preliminary results indicate that only very humanlike devices can elicit the broad range of responses that people typically direct toward each other. Conversely, to build androids capable of emulating human behavior, it is necessary to investigate social activity in detail and to... Read more

This paper proposes two simple and robust algorithmic solutions for two frequently encountered problems in in-habited virtual heritage worlds: a) the 'still-frozen' behavior of virtual actors once their predefined-scripted anima-tion is executed and b) their real-time rendering which is mostly often based on non physically-principled local il-lumination models. Our described framework thus provides a) a procedural keyframe generator for realistic idle motions blended with the virtual actor's scripted behavior and b) an extension to precomputed... Read more

In this paper, we present some initial thoughts on the occurrence of verbal abuse in human-chatterbot interaction within the framework of social-cognition. This thinking is an important step towards the understanding of virtual relationships and the design of socially adept technology. Read more

Chatterbots are computer programs that simulate intelligent conversation. They are situated between games and toys, as their aim is mostly to be entertaining, but the user doesn't have to follow precise rules when playing with the program. Currently business and educational applications have started to emerge as a further development of the idea of intelligent dialog. For the game industry, they come close to the concept of NPC, or Non-Player Character, and they may become... Read more

How does one go about designing a human? With the rise in recent years of virtual humans this is no longer purely a philosophical question. Virtual humans are intelligent agents with a body, often a human-like graphical body, that interact verbally and non-verbally with human users on a variety of tasks and applications. At a recent meeting on this subject, the above authors participated in a several day discussion on the question of virtual human... Read more