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Operator-Potential Heuristics for Symbolic Search

AAAI 2022 · Learning theory and algorithms › Combinatorial and search optimization · approach: Classical and HTN planning · 5 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use consistent operator-potential heuristics in symbolic forward searchSymbolic forward search · IPC optimal-track tasks, 1998–2018solved tasks: 173 more tasksHelped
Use consistent operator-potential heuristics instead of blind bidirectional uniform-cost searchSymbolic search · IPC optimal-track tasks, 1998–2018solved tasks: 105 more tasksHelped
Use symbolic search with A+I rather than explicit-state potential-heuristic A*Potential heuristic A+I · IPC optimal-track tasks, 1998–2018solved tasks: 109 instances moreHelped
Optimize the heuristic over average states while enforcing maximum initial-state value, rather than only optimizing initial-state value (ablation)Operator-potential symbolic search · IPC optimal-track tasks, 1998–2018solved tasks: 1 109 vs 996Helped
Use sampled-state optimization (S1k+I) instead of initial-state-only optimization (I) (ablation)Operator-potential symbolic search · IPC optimal-track tasks, 1998–2018solved tasks: 1 081 vs 996Helped
Use mutex-approximated reachable-state optimization (M2+I) instead of initial-state-only optimization (I) (ablation)Operator-potential symbolic search · IPC optimal-track tasks, 1998–2018solved tasks: 1 103 vs 996Helped
Use path-dependent operator potentials on the original task instead of consistent operator potentials on the transformed task (ablation)Operator-potential symbolic search · IPC optimal-track tasks, 1998–2018coverage across domainsHurt
Use floating-point potentials rounded down instead of integer operator potentials from the MIP (ablation)Path-dependent operator-potential heuristic · IPC optimal-track tasks, 1998–2018solved tasks: 107 fewer tasks from 20 domainsHurt
Transform planning tasks to transition normal form (ablation)Operator-potential symbolic search · IPC optimal-track tasks, 1998–2018coverageHurt
Use operator-potential heuristics that induce heuristic-value partitions in symbolic searchSymbolic forward search · Commonly solved tasksmean BDD nodes per expanded BDDHelped
Use operator-potential heuristics instead of blind symbolic forward searchSymbolic forward search · Commonly solved tasksnumber of expanded BDDsHurt
Use operator-potential heuristics instead of blind symbolic forward searchSymbolic forward search · Commonly solved taskssum of expanded BDD nodesHelped

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