Proceedings

Simulation-Based Admissible Dominance Pruning

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Proceedings of the Twenty-Fourth International Joint Conference on Artificial Intelligence. Main Track. Pages 1689-1694.

Abstract

In optimal planning as heuristic search, admissible pruning techniques are paramount. One idea is dominance pruning, identifying states better than other states. Prior approaches are limited to simple dominance notions, like more STRIPS facts true or higher resource supply. We apply simulation, well-known in model checking, to compute much more general dominance relations based on comparing transition behavior across states. We do so effectively by expressing state-space simulations through the composition of simulations on orthogonal projections. We show how simulation can be made more powerful by intertwining it with a notion of label dominance. Our experiments show substantial improvements across several IPC benchmark domains.

Álvaro Torralba Arias de Reyna, and Jörg Hoffmann. 2015. Simulation-Based Admissible Dominance Pruning. In Proceedings of the Twenty-Fourth International Joint Conference on Artificial Intelligence, IJCAI-15. IJCAI, 1689–1694. https://ijcai.org/proceedings/2015/241
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