Publication
AAAI/IAAI 2015
Conference paper

Factored symmetries for merge-and-shrink abstractions

Abstract

Merge-and-shrink heuristics crucially rely on effective reduction techniques, such as bisimulation-based shrinking, to avoid the combinatorial explosion of abstractions. We propose the concept of factored symmetries for merge-andshrink abstractions based on the established concept of symmetry reduction for state-space search. We investigate under which conditions factored symmetry reduction yields perfect heuristics and discuss the relationship to bisimulation. We also devise practical merging strategies based on this concept and experimentally validate their utility.

Date

01 Jun 2015

Publication

AAAI/IAAI 2015

Authors

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