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arXiv 2103.14434cs.AI
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广义规划作为启发式搜索

Generalized Planning as Heuristic Search

Universitat Pompeu Fabra(庞培法布拉大学)

Javier Segovia-Aguas, Sergio Jiménez, Anders Jonsson

摘要:

虽然启发式搜索是经典规划中最成功的方法之一,但这种规划范式并不直接适用于广义规划(GP)。传统上,规划作为启发式搜索通过在接地状态空间中搜索来解决顺序规划的计算。另一方面,GP旨在计算类似算法的计划,可以分支和循环,并推广到一组(可能是无限的)经典规划实例。本文将规划作为启发式搜索的一种范式,应用于规划问题的特殊性,提出了第一种求解规划问题的原生启发式搜索方法。首先,本文定义了一个新的GP解决方案空间,这是独立的规划实例的数量在GP问题,这些实例的大小。其次,本文定义了不同的评价和启发式函数,用于指导我们的GP解决方案空间中的组合搜索。最后,本文定义了一个GP算法,称为最佳优先广义规划(BFGP),实现了最佳优先搜索的解决方案空间的指导下,我们的评价/启发式功能。

英文摘要:

Although heuristic search is one of the most successful approaches to classical planning, this planning paradigm does not apply straightforwardly to Generalized Planning (GP). Planning as heuristic search traditionally addresses the computation of sequential plans by searching in a grounded state-space. On the other hand GP aims at computing algorithm-like plans, that can branch and loop, and that generalize to a (possibly infinite) set of classical planning instances. This paper adapts the planning as heuristic search paradigm to the particularities of GP, and presents the first native heuristic search approach to GP. First, the paper defines a novel GP solution space that is independent of the number of planning instances in a GP problem, and the size of these instances. Second, the paper defines different evaluation and heuristic functions for guiding a combinatorial search in our GP solution space. Lastly the paper defines a GP algorithm, called Best-First Generalized Planning (BFGP), that implements a best-first search in the solution space guided by our evaluation/heuristic functions.

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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