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Journal of Logic and Computation 1998 8(3):233-260; doi:10.1093/logcom/8.3.233
© 1998 by Oxford University Press
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Original Articles

Engineering AgentSpeak(L): A Formal Computational Model

MARK D'INVERNO and MICHAEL LUCK

Cavendish School of Computer Science, University of Westminster London, W1M 8JS. E-mail: dinverm{at}vrmin.ac.uk
Department of Computer Science, University of Warwick Coventry, CV4 7AL. E-mail: mikeluck{at}dcs.warwick.ac.uk

Perhaps the most successful agent architectures, and certainly the best known, are those based on the Belief-Desire-Intention (BDI) framework. Despite the wealth of research that has accumulated on both formal and practical aspects of this framework, however, there remains a gap between the formal models and the implemented systems. In this paper, we build on earlier work by Rao aimed at narrowing this gap, by developing a strongly-typed, formal, yet computational model of the BDI-based AgentSpeak(L) language. AgentSpeak(L) is a programming language, based on the Procedural Reasoning System (PRS) and the Distributed Multi-Agent Reasoning System (dMARS), which determines the behaviour of the agents it implements. In developing the model, we add to Rao's work, identify some omissions, and progress beyond the description of a particular language by giving a formal specification of a general BDI architecture that can be used as the basis for providing further formal specifications of more sophisticated systems.

Keywords: Agent languages; intelligent agents; BDI architectures; Z; formal specification


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