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arXiv 2005.01242cs.ROcs.DSmath.PR
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RRT树的概率分析

Probabilistic Analysis of RRT Trees

McGill University(麦吉尔大学)

Konrad Anand, Luc Devroye

摘要:

本文分析了快速探索随机树(RRT)算法的性能和运行时间。证明了步长为$ε$的RRT增长到接近$d$维单位立方体中每一点的时间为$Θ\left(\frac1{ε^d} \log \left(\frac1ε\right)\right)$。此外,树到达正概率区域所需的时间为$O\left(ε^{-\frac32}\right)$。最后,显示与最近邻树(NNT)的关系。该关系表明,$n$步骤后的总欧几里得路径长度为$O(\sqrt n)$,树的预期高度由$(e + o(1)) \log n$上界。

英文摘要:

This thesis presents analysis of the properties and run-time of the Rapidly-exploring Random Tree (RRT) algorithm. It is shown that the time for the RRT with stepsize $ε$ to grow close to every point in the $d$-dimensional unit cube is $Θ\left(\frac1{ε^d} \log \left(\frac1ε\right)\right)$. Also, the time it takes for the tree to reach a region of positive probability is $O\left(ε^{-\frac32}\right)$. Finally, a relationship is shown to the Nearest Neighbour Tree (NNT). This relationship shows that the total Euclidean path length after $n$ steps is $O(\sqrt n)$ and the expected height of the tree is bounded above by $(e + o(1)) \log n$.

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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