Abstract: A model and implementation process of a conversational rational agent as a kernel of a dialogue system and/or as an element (agent) of a multiagent system including definition of a conceptual architecture of a conversational rational agent; formal specification of the different components of this architecture and their combination permitting a formal model to be obtained; definition of the software architecture implementing the formal architecture; and definition of implementation mechanisms of the formal specifications, the rational agent being suited both to converse with another agent or with a user of the system through any communication medium.

Abstract: The invention especially concerns a management process of voice production activity of a person-machine interaction system with voice component, this process comprising operations consisting of exercising the voice production activity of the system, capturing external acoustic activity originating from an agent external to the system, and analyzing the semantic contents of any statement optionally included in the external acoustic activity. The process of the invention in addition comprises a detection operation consisting of detecting external acoustic activity during a period of voice production activity of the system, and a decision process consisting especially of interrupting the voice production activity of the system in the case where the time elapsed since the start of the external acoustic activity exceeds a first predetermined limited duration (P1) and/or in the case where the duration of the external acoustic activity exceeds a second predetermined limited duration (P2).