In the last few years, we have witnessed in Information Technologies that virtual communication over the network has become highly multi-modal, thus richer. In addition to the online chat and short text messaging (SMS), video and audio have become common and well integrated in order to realize the richness. In communication and interactions among humans and robots, such richness are still rare ...

Agent-based systems are potentially extremely powerful, but agent properties such as autonomy and proactivity raise significant challenges for usability. This paper argues that too little attention is being paid to human-agent communication from the user’s perspective. To justify the aspirations of agent designers, fundamental usability questions must be addressed more systematically than is cu...

In this paper I will present my approach on how to merge the HCI field with the new growing field of agent technology, especially from the point of view of the use and need of a personal assistant. Multimodality is a must if we are ever to implement a user-friendly, intuitive and effective interface for a user to interact with a system (agent or other). Selecting modality for presentation can b...