We realize a telephone-based collaborative natural language dialogue system. Since natural language involves very various expressions, a large number of VoiceXML scripts need to be prepared to handle all possible input patterns. We realize flexible dialogue management for various user utterances by generating VoiceXML scripts dynamically. Moreover, we address appropriate user modeling in order ...

It is shown how two tools developed in argumentation theory are useful for AI systems for electronic democracy [2,3] and more generally for formal dialogue systems representing deliberation. The novel part of this analysis is that it represents the speech of proposing as a small dialogue exchange in which one party practically reasons with another, based on premises that both are committed to, ...

This article reviews formal systems that regulate persuasion dialogues. In such dialogues two or more participants aim to resolve a difference of opinion, each trying to persuade the other participants to adopt their point of view. Systems for persuasion dialogue have found application in various fields of computer science, such as nonmonotonic logic, artificial intelligence and law, multi-agen...

This paper reports on experiments in measuring the general level of conversational interactivity in COMPS problemsolving dialogues. COMPS is a web-delivered computermediated problem solving environment for student collaborative exploratory learning. The primary mode of interaction is typed dialogue. We anticipate that the computer will provide a status display to aid the instructor, who is effe...

This research explored how between-group eollaboration enhanced the co-construction of knowledge and performance on project-based learning tasks of collaborative learning groups. The findings of 2 case studies, one that focused on between-group mentoring and one that focused on between-group project review, revealed that both strategies were perceived favorably by the students and had a positiv...

This paper describes efforts to both promote and recognize student dialogue in free-entry text discussion within an inquiry-learning environment. First, we discuss collaborative tools that enable students to work together and how these tools can potentially focus student effort on subject matter. We then show how our tutor uses an expert knowledge base to recognize (with 88% success rate) when ...

In this paper, we argue for the need to distinguish between task and dialogue initiatives, and present a model for tracking shifts in both types of initiatives in dialogue interactions. Our model predicts the initiative holders in the next dialogue turn based on the current initiative holders and the effect that observed cues have on changing them. Our evaluation across various corpora shows th...

We claim that a natural dialogue interface to a semiautonomous intelligent agent has important advantages, especially when operating in real-time complex dynamic environments involving multiple concurrent tasks and activities. We discuss some of the requirements of such a dialogue interface, and describe some of the features of a working system built at CSLI, focusing on the data-structures and...

The applications of 3D-virtual environments and Voice User Interface (VUI) on personal computers have received significant attention in recent years. Since speech is the most natural way of communication, incorporating VUI into virtual environments can greatly enhance user interaction and immersiveness. Although there have been many researches addressing the issue of integrating VUI and 3D-virt...

Within the EU-funded COMPANIONS project, we are working to evaluate new collaborative conversational models of dialogue. Such an evaluation requires us to benchmark approaches to companionable dialogue. In order to determine the impact of system strategies on our evaluation paradigm, we need to generate a range of companionable conversations, using dialogue strategies such as ‘empathy’ and ‘pos...