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arXiv 1106.0675cs.AI
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FF计划系统:通过启发式搜索快速生成计划

The FF Planning System: Fast Plan Generation Through Heuristic Search

J. Hoffmann, B. Nebel

摘要:

我们描述并评估FF规划系统中使用的算法技术。像HSP系统一样,FF依赖于前向状态空间搜索,使用通过忽略删除列表来估计目标距离的启发式算法。与HSP的启发式不同,我们的方法不假设事实是独立的。我们介绍了一种新的搜索策略,结合爬山与系统搜索,我们展示了如何其他强大的启发式信息可以被提取和使用修剪的搜索空间。FF是最近AIPS-2000规划竞赛中最成功的自动规划器。我们审查的竞争结果,其他基准领域的数据,并调查的原因FF的运行时性能相比,HSP。

英文摘要:

We describe and evaluate the algorithmic techniques that are used in the FF planning system. Like the HSP system, FF relies on forward state space search, using a heuristic that estimates goal distances by ignoring delete lists. Unlike HSP's heuristic, our method does not assume facts to be independent. We introduce a novel search strategy that combines hill-climbing with systematic search, and we show how other powerful heuristic information can be extracted and used to prune the search space. FF was the most successful automatic planner at the recent AIPS-2000 planning competition. We review the results of the competition, give data for other benchmark domains, and investigate the reasons for the runtime performance of FF compared to HSP.

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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