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A Formal Metareasoning Model of Concurrent Planning and Execution

AAAI 2023 · Learning theory and algorithms › Combinatorial and search optimization · approach: Classical and HTN planning

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Allow base-level actions to execute while planning continuesConcurrent Planning and Execution (CoPE) · Airport example, deadline 30success probability: 0.25 -> 0.85Helped
Commit to an action before planning is completeCoPE · Airport example, deadline 25success probability: zero -> 0.5Helped
Account for base-level execution when scheduling computation, rather than ignoring executionCoPE algorithms on 15-puzzle instances · 15-puzzle, 20 processes, base-level action duration 3success probabilityHelped
Plan base-level execution in advance rather than selecting execution only on demandBGS adaptations to CoPE on 15-puzzle instances · 15-puzzle, base-level action duration 3success probabilityHelped
Consider more action placements than Max-LET by using 2-BoundedBGS adaptations to CoPE on 15-puzzle instances · 15-puzzle, base-level action duration 3success probabilityHelped
Use demand-execution instead of planning execution in advanceBGS adaptations to CoPE on 15-puzzle instances · 15-puzzle, base-level action duration 3success probabilityHurt
Use demand-execution schemes instead of the more success-focused Max-LET and 2-Bounded schemesCoPE algorithms on 15-puzzle instances · 15-puzzle, 20 processes, base-level action duration 3runtimeHelped
Solve the MDP directly using value iterationCoPE · CoPE instances with more than 2 processesruntime feasibilityHurt

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