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La notion d'intentionnalité dans la spécification de comportements d'agents autonomes situés en environnement virtuel

Abstract : This thesis lies within the scope of the specification of behaviors of autonomous agents situated in a virtual universe. The objective is the proposal for a behavioral model which exploits the concept of intention like semantic bond between the various stages of the cycle of software development. For this purpose, the concept of intention, and more largely of intentionnality, is studied under three different lightings in order to consider its employment appropriateness in the exercise of such a specification. The philosophical aspects (through the phenomenology and the analytic philosophy), the psychological and neurophysiological aspects of this concept are thus approached. What emerges from this analysis is that : · the role of the intention is fundamental in release, continuous control of execution and stop of the action ; · the role of intentionality within the dialogue between the different specialists involved in the specification process, the agent being then regarded as object of the speech. This study introduces a criticism of the existing approaches of behavioral specification, particularly BDI architectures (Belief Desire Intention). It appears that architectures which exploit the concept of intention use it like guide for planning or like concept of modeling. They are almost all symbolic approaches. These reflexions pose the bases of the suggested model: it is a reactive model which exploits the concept of intention to carry out a selection of action. The agent employs behavioral rules described in a declaratory language in order to generate intentions to satisfy, according to its situation. The exploitation of knowledge about the supposed effects of its actions on itself enables it to carry out a qualitative reasoning and to select the most suited action. The concept of intention thus makes it possible to establish a bond between a set of symbolic behavioral rules and a corpus of imperative methods (sensorimotor schemes of the agent) via clarification of the "meaning of the action". In addition, the introduction of this semantic bond within the model supports the communication between the various speakers involved in the specification process. The intentional stance offers the concepts necessary to the federation of the points of view of these various specialists. The translation of the behavior in the form of behavioral rules is done according to a semantic which is close to the ontology of the field approached by simulation, the concept of intention being common to the various phases of design, from the analysis to the implementation. After detailing the model resulting from this proposal, the technical needs for its execution and the final application, the thesis concludes on the benefits from this semantic contribution within a reactive model for the specification as a whole (from the analysis of the problem to the interpretation of the results) and draws the prospects for the design of hybrid architectures. The ways thus opened are primarily : · the learning by the agent of the supposed effect of its actions; · the exchange of know-how between agents; · the automatic generation of explanation, with a possible application in the virtual environments for training; · the development of a design method based on the behavioral model suggested.
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Contributor : Pierre-Alexandre Favier <>
Submitted on : Friday, February 11, 2005 - 1:36:09 PM
Last modification on : Wednesday, October 14, 2020 - 4:02:27 AM
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Pierre-Alexandre Favier. La notion d'intentionnalité dans la spécification de comportements d'agents autonomes situés en environnement virtuel. Autre [cs.OH]. Université de Bretagne occidentale - Brest, 2004. Français. ⟨tel-00008452⟩

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