Specification and Evaluation of Preferences for Planning under Uncertainty

Sek-Wah Tan and Judea Pearl

This paper describes a framework for specifying behavior in terms of preference sentences. We demonstrate how such preference sentences, together with normality defaults, may be used as constraints on admissible preference-ranking of worlds and how they allow a reasoning agent to evaluate queries. We also prove that by extending the syntax to allow for importance-rating of preference sentences, we obtain a language that is powerful enough to represent all possible preferences among worlds.

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