Effective Heuristics and Belief Tracking for Planning with Incomplete Information

13 years 2 months ago

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Conformant planning can be formulated as a path-ﬁnding problem in belief space where the two main challenges are the heuristics to guide the search, and the representation and update of beliefs. In the translation-based approach recently introduced by Palacios and Geffner, the two aspects are handled together by translating conformant problems into classical ones that are solved with classical planners. While competitive with state-of-the-art methods, the translation-based approach runs however into three difﬁculties. First, complete translations are expensive for problems with high width; second, incomplete translations can generate inﬁnite heuristic values for problems that are solvable; and third, aspects that are speciﬁc to the conformant setting, such as the cardinality of beliefs, are not accounted for. In this work, we build on the translation-based approach but not for solving conformant problems with a classical planner but for deriving heuristics and computing belief...

Alexandre Albore, Miquel Ramírez, Hector Ge

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