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...at could be captured by means of speech act theory. 2.2 Agent Communication Languages Agent Communication Language, like KQML and FIPA ACL have the same seminal idea from ordinary language philosophy =-=[11,6]-=- that each utterance is an act – i.e., an action – which aims to accomplish, to do something. So that FIPA ACL and KQML messages, like speech acts, express an illocution value – i.e. an action specifi...

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...ituations for an adequation with speech acts theory. These operators are the following : belief (bel(i,p)), desire (wish(i,p)), goal (goal(i,p)) (non-primitive operator contrary to Cohen and Levesque =-=[2]-=-), capability (can(i,a,p)), commitment (cmt(i,p)), has.plan (planning) (has.plan(i,π,p)), intention (int(i,p)) defined on the base of commitment and has.plan, and obligation (oblig(i,j,p)) in connecti...

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...ation of Chaib-draa and Vanderveken’s work [1] on a recursive semantics for ACL according to the situation calculus. 1 Introduction Artificial agent models like BDI (Belief, Desire, Intention) agents =-=[2,3]-=- and models of interaction between agents like KQML (Knowledge Query Manipulation Language) [4] and FIPA ACL (Foundation for Intelligent Physical Agent) [5], have always been conceived for precised ap...

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...ms to be justified because FIPAs project was to propose specifications for an interaction langage so as to maximize agent-based applications interoperability, and only for artificial agents. As Singh =-=[13]-=- noticed, these languages are neither conceived nor usable for exchanges such as dialog ones. Recent Phd Thesis of Guerin [14] also supports this idea. Singh argues also that acts should not be define...

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...ed the conversational background ones. We then propose a first step towards a Conversational Language between artificial agents of mixed community fitting as close as possible with Speech Acts theory =-=[6,7,8]-=-, a valid theory of human interaction. So as to build this language, we propose to lean our research on Vanderveken’s work [8] on speech act theory and those in recursive semantics for an agent commun...

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...ction of a dialog taxonomy like the one of Walton and Krabbe [17], or in function of the agent capability coming from its role, or else in function of dialog strategies in accordance with game theory =-=[18]-=-. So as to illustrate our proposition, we propose a re-definition of two of the primitive communicative acts of FIPA ACL Inform and Request using the recursive semantics to carry out interesting aspec...

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...tive agents which aims to create agents not only intelligent, but also rational because they can reason before acting. BDI models are nowadays a crucial paradigm for human like agent actions modeling =-=[10]-=-. But, if action theory is surely adapted for basic actions, we believe that conversational actions need a particular management such as the contextualization that could be captured by means of speech...

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...isely in the language semantics which roots in different agent theory. For FIPA ACL, the theoretical aspects dealing with the formal semantics of interaction languages were largely developed by Sadek =-=[12]-=-. Although these languages were founded on Speech Act theory [6,8], they do not define language primitives in each act categories, but only in assertive and directive primitives – i.e., respectively, ...

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...situation calculus. 1 Introduction Artificial agent models like BDI (Belief, Desire, Intention) agents [2,3] and models of interaction between agents like KQML (Knowledge Query Manipulation Language) =-=[4]-=- and FIPA ACL (Foundation for Intelligent Physical Agent) [5], have always been conceived for precised application tasks, and mostly for information exchange. These communication languages are only de...

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...nteraction protocols define a priori and consequently fix series of actions. So that we should organize conversations between agents in function of a dialog taxonomy like the one of Walton and Krabbe =-=[17]-=-, or in function of the agent capability coming from its role, or else in function of dialog strategies in accordance with game theory [18]. So as to illustrate our proposition, we propose a re-defini...

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...d applications interoperability, and only for artificial agents. As Singh [13] noticed, these languages are neither conceived nor usable for exchanges such as dialog ones. Recent Phd Thesis of Guerin =-=[14]-=- also supports this idea. Singh argues also that acts should not be defined anymore exclusively on agent mental states, because this provide an unique model of agency which reduces the set of realizab...

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...equent situations. The formalization of the natural language utterance into speech acts can permit to extract commitments and then use them into dialog games for a dynamical management of interaction =-=[16]-=-. Finally thesability to manage a large variety of parameters into the same communication language allows a dynamical management of acts sequencing, whereas classical interaction protocols define a pr...

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... with a BDI agent model in respect with Speech Acts Theory and integrating essential elements of the conversational background. This proposition is a continuation of Chaib-draa and Vanderveken’s work =-=[1]-=- on a recursive semantics for ACL according to the situation calculus. 1 Introduction Artificial agent models like BDI (Belief, Desire, Intention) agents [2,3] and models of interaction between agents...

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...ed the conversational background ones. We then propose a first step towards a Conversational Language between artificial agents of mixed community fitting as close as possible with Speech Acts theory =-=[6,7,8]-=-, a valid theory of human interaction. So as to build this language, we propose to lean our research on Vanderveken’s work [8] on speech act theory and those in recursive semantics for an agent commun...

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... of the conversational background that an agent must take into account when he analyses and interprets speech acts, the degree of strength and the role of agents are certainly the most important ones =-=[15]-=-. Actually, they are necessary for the contextualization of an act: the degree of strength to quantify the emphasis with which the act was performed, and the role to interpret acts where the hierarchy...