Handling prioritized goals and subgoals in a logical account of goal change

Authors:
Shakil M. Khan;Yves Lespérance
Affiliations:
York University, Toronto, Canada;York University, Toronto, Canada
Venue:
Proceedings of The 8th International Conference on Autonomous Agents and Multiagent Systems - Volume 2
Year:
2009

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Abstract

Most existing formal models of goals [2, 3] assume that all goals are equally important and many only deal with achievement goals. Moreover, they do not guarantee that an agent's goals will properly evolve when an action/event occurs, e.g. when the agent's beliefs/knowledge changes or a goal is adopted or dropped. Also, most of these frameworks do not model the dependencies between goals and the subgoals and plans adopted to achieve these goals -- subgoals adopted to bring about a goal should be dropped when the parent goal becomes impossible, is achieved, or is dropped. Dealing with these issues is important for developing effective models of rational agency and BDI agent programming languages.