Admissible Abstractions for Near-optimal Task and Motion Planning
Admissible Abstractions for Near-optimal Task and Motion Planning
复制标题
近乎最优的任务和运动规划的可接受抽象
DOI:
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发表时间:
2018
期刊:
影响因子:
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通讯作者:
N. Roy
中科院分区:
文献类型:
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作者:
William Vega;N. Roy
We define an admissibility condition for abstractions expressed using angelic semantics and show that these conditions allow us to accelerate planning while preserving the ability to find the optimal motion plan. We then derive admissible abstractions for two motion planning domains with continuous state. We extract upper and lower bounds on the cost of concrete motion plans using local metric and topological properties of the problem domain. These bounds guide the search for a plan while maintaining performance guarantees. We show that abstraction can dramatically reduce the complexity of search relative to a direct motion planner. Using our abstractions, we find near-optimal motion plans in planning problems involving 10^13 states without using a separate task planner.