What kinds of social organizations are used as resources when people communicate through talk in interaction? It is this question that conversation analysis attempts to answer. Conversation analysis (CA) studies the methods participants orient to when they organize social action through talk. It investigates rules and practices from an interactional perspective and studies them by examining rec...

We present a type theory for analyzing concurrent multiparty interactionsas found in service-oriented computing. Our theory introduces a novel andflexible type structure, able to uniformly describe both the internal and theinterface behavior of systems, referred respectively as choreographies and con-tracts in web-services terminology. The notion of conversation builds on th...

Models of conversation that rely on a robust notion of cooperation don't model dialogues where the agents' goals conflict; for instance, negotiation over restricted resources, courtroom cross examination and political debate. We aim to provide a framework in which both cooperative and non-cooperative conversation can be analyzed. We develop a logic that links the public commitments that agents ...

This paper describes a strategy for the conversation system to take part in human-to-human group conversation. One big characteristic of the group conversation system is that it can choose whether to observe or to take turn in the conversation. We implement the computational model combined with speech and gaze recognizers to keep the rules in turn taking, and define an interruption decision str...

From the start, I was never entirely sold on the idea of Chat Circles. I very much liked how the user's avatar was a circle on the visualization plane, and how it changed to match the users activity. However, immediately my concern turned to people abusing this fact. From the looks of the prototype pictures, players chat will be displayed inside their circle. What is to stop a user from spammin...

Office workers are today often faced with the dilemma of being focused on the present activity and yet available for incoming calls on their mobile phone. Current technology does not support this situation. Many intrusive calls seem to occur as consequence of the lack of information about the recipient's context. The focus of this thesis is the initiation of mobile communication via mobile phon...

In this paper, we present a computational approach to understanding and augmenting the conversational knowledge process that is a collective activity for knowledge creation, management, and application, where conversational communications are used as a primary means of interaction among participating agents. The key idea is conversation quantization, a technique of approximating a continuous fl...