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arXiv 2303.13638cs.AIcs.LO
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规划即带启发式的定理证明

Planning as Theorem Proving with Heuristics

Toronto Metropolitan University(多伦多都会大学)

Mikhail Soutchanski, Ryan Young

AI总结:

本文提出一种基于情境演算和A*搜索的定理证明提升启发式规划器,虽速度较慢但能生成更短计划并探索更少状态,证明该方法是可行的。

摘要:

在情境演算中将规划视为定理证明的方法在50年前因被认为不可能而被放弃。但我们开发了一种定理证明提升启发式(TPLH)规划器,它使用A*搜索算法在情境树中搜索计划。该规划器由基于删除松弛的领域无关启发式控制。我们将TPLH与快速向下(FD)和最佳优先宽度搜索(BFWS)规划器在多个标准基准上进行比较。由于我们启发式函数的实现未优化,TPLH比FD和BFWS慢。但它计算出更短的计划,并探索更少的状态。我们讨论了知识表示与推理(KR&R)领域内先前的规划研究,并指出了相关方向。因此,我们表明在情境演算中进行演绎式提升启发式规划实际上是可行的。

英文摘要:

Planning as theorem proving in situation calculus was abandoned 50 years ago as an impossible project. But we have developed a Theorem Proving Lifted Heuristic (TPLH) planner that searches for a plan in a tree of situations using the A* search algorithm. It is controlled by a delete relaxation-based domain independent heuristic. We compare TPLH with Fast Downward (FD) and Best First Width Search (BFWS) planners over several standard benchmarks. Since our implementation of the heuristic function is not optimized, TPLH is slower than FD and BFWS. But it computes shorter plans, and it explores fewer states. We discuss previous research on planning within KR\&R and identify related directions. Thus, we show that deductive lifted heuristic planning in situation calculus is actually doable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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