Modelization and experimentation of conversational policies for non task oriented agents based on dissonance and relevance theories

We propose a model for dialogue between non task oriented agents, based on the dissonance and relevance theories. Non task oriented agents are studied as a model for non expert agents, as opposed to task oriented agents, in order to provide models for social science simulations. Dialogue between non task oriented agents can not be modelled like task oriented dialogue because no criterium is provided to define the beginning and the termination of a dialogue, with respect to a common goal. The dissonance theory has been proposed by cognitive researchers as a drive for acting. Therefore, dissonance is a seducing theory to model the motivation of an agent to open a dialogue. Relevance theory is also introduced to model the development and termination phases of such a dialogue. An implemented system in then presented and evaluated.