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arXiv 1302.6831cs.AI
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不确定规划中的操作员选择

Operator Selection While Planning Under Uncertainty

Cooperative Research Centre for Intelligent Decision Systems(智能决策系统合作研究中心);Materials Research Laboratory(材料研究实验室)

Todd Michael Mansell, Grahame Smith

摘要:

本文介绍了最好的第一个搜索策略使用的U-计划(曼塞尔1993年a),规划系统,构建定量排名计划给出了一个不完整的描述不确定的环境。U-Plan使用不确定和不完整的证据来描述环境,使用Dempster-Shafer间隔来描述环境,并生成一组可能的世界状态。计划的构建是在一个抽象的层次结构中进行的,在这个层次结构中,战略决策先于战术决策。通过这种抽象层次结构的搜索是由基于决策理论的定量测量(预期实现)指导的。搜索策略最好首先提供更新预期实现情况的规定,并根据规划发展审查以前的决定。U-Plan为多个可能的世界生成多个计划,并尝试将现有计划用于新的世界情况。然后,基于合并一组计划和适当定时的知识获取操作符来构建超级计划,所述操作符用于在计划执行期间在计划备选方案之间做出决定。

英文摘要:

This paper describes the best first search strategy used by U-Plan (Mansell 1993a), a planning system that constructs quantitatively ranked plans given an incomplete description of an uncertain environment. U-Plan uses uncertain and incomplete evidence de scribing the environment, characterizes it using a Dempster-Shafer interval, and generates a set of possible world states. Plan construction takes place in an abstraction hierarchy where strategic decisions are made before tactical decisions. Search through this abstraction hierarchy is guided by a quantitative measure (expected fulfillment) based on decision theory. The search strategy is best first with the provision to update expected fulfillment and review previous decisions in the light of planning developments. U-Plan generates multiple plans for multiple possible worlds, and attempts to use existing plans for new world situations. A super-plan is then constructed, based on merging the set of plans and appropriately timed knowledge acquisition operators, which are used to decide between plan alternatives during plan execution.

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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