We present an approach to the development of a dialogue manager based on stochastic models for the representation of the dialogue structure and strategy. The input of the manager consists of the semantic representation of the user turn. It has been applied to a Spanish dialogue system which answers queries about train timetables by telephone in Spanish.

Argument-based dialogues allow agents to effectively communicate both their beliefs and the reasons they have for holding those beliefs; consequently, they have become a useful mechanism for agent co-ordination, particularly in the domains of human-machine interaction and agreement technologies (Modgil et al. 2013). We focus on a simple type of persuasion dialogue (where one agent presents argu...

This paper presents an evaluation of directed dialogue (DD) and mixed initiative (MI) strategies in a spoken language system for Email. We compare the DD strategy, in which the system controls the dialog, to the MI strategy, in which users can flexibly control the dialog. For evaluating both strategies we used the PARADISE framework, which supports comparisons among dialogue strategies. Our exp...

Modeling the behavior of the dialogue management in the design of a spoken dialogue system using statistical methodologies is currently a growing research area. This paper presents a work on developing an adaptive learning approach to optimize dialogue strategy. At the core of our system is a method formalizing dialogue management as a sequential decision making under uncertainty whose underlyi...

The dialogue strategies used by a spoken dialogue system strongly influence performance and user satisfaction. An ideal system would not use a single fixed strategy, but would adapt to the circumstances at hand. To do so, a system must be able to identify dialogue properties that suggest adaptation. This paper focuses on identifying situations where the speech recognizer is performing poorly. W...

Several dialogue types, including inquiry, persuasion and deliberation, transfer information between agents so that their beliefs and opinions may be revised. The speech acts in different dialogue types have different pragmatic implications. For a representative sub-type of persuasion dialogues we consider how they can be conducted efficiently, in terms of minimising the expected transfer of in...

In this research, we aim at the establishment of a method of controlling dialogues in accordance with the changes of performance in computation. So that the system takes the most suitable dialogue strategy according to performance in computation, it needs to calculate evaluation functions modeled with performance in computation in the inside all time. In this paper, we clarify dialogue efficien...

We address a dialogue framework for queries on manuals of electric appliances with a speech interface. Users can make queries by unconstrained speech, from which keywords are extracted and matched to the items in the manual. As a result, so many items are usually obtained. Thus, we introduce an effective dialogue strategy which narrows down the items using a tree structure extracted from the ma...

Recently we have seen a few development in argumentation-based dialogue systems, but there is less research in understanding agents’ strategic behaviour in dialogues. We study agent strategies by linking a specific form of argumentation-based dialogues and mechanism design. Specifically, focusing on persuasion dialogues, we show how dialogues can be mapped to concepts in mechanism design. We pr...

A high-level dialogue system involves symbolic reasoning and deep understanding of user input, and its object is to handle complex dialogue phenomena such as inference and negotiation. However, it is difficult for high-level dialogue techniques to be extended toward a practical dialogue system that must generate effective responses in a real environment because the high-level dialogue technique...