ECAI 2004 Conference Paper

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Expectation Reasoning using Regret and Disappointment

Binh Vu Tran, James Harland, Margaret Hamilton

A critical aspect of an agent system is the ability to deal with unexpected situations to determine an appropriate course of action in a changing environment. In this paper, we investigate the incorporation of the mental attitudes of regret and disappointment (which have been studied by economists using utility theory) into the agent's reasoning system in order to improve its ability to deal with unexpected events. Mental attitudes in agent systems have generally been expressed in modal logics, such as the Belief-Desire-Intention (BDI) logic and epistemic logic, and, more recently, in a logic of expectation and observation. We show how regret and disappointment can be naturally integrated into a framework based on the attitudes of expectation and observation, and give describe some key properties of the system.

Keywords: Agent System, Expectation Reasoning, Modal Logic, Regret, Disappointment

Citation: Binh Vu Tran, James Harland, Margaret Hamilton: Expectation Reasoning using Regret and Disappointment. In R.López de Mántaras and L.Saitta (eds.): ECAI2004, Proceedings of the 16th European Conference on Artificial Intelligence, IOS Press, Amsterdam, 2004, pp.74-78.

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ECAI-2004 is organised by the European Coordinating Committee for Artificial Intelligence (ECCAI) and hosted by the Universitat Politècnica de València on behalf of Asociación Española de Inteligencia Artificial (AEPIA) and Associació Catalana d'Intel-ligència Artificial (ACIA).