A Coupling Argument for the Random Transposition Walk

A Coupling Argument for the Random Transposition Walk
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随机转置游走的耦合论证

DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
Olena Bormashenko
Olena Bormashenko
中科院分区:
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文献类型:
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作者:
Olena Bormashenko

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本文研究了对称群上随机换位游动的混合时间。虽然人们早就知道这种行走是以n*log(n)次的顺序混合的,但这种结果以前没有使用耦合来实现。一个耦合参数显示正确的顺序混合时间。这是通过首先投影到共轭类,然后使用Bubley-Dyer路径耦合构造来实现的。为了获得适当的界限的时间,它采取的路径耦合,以满足,思想从施拉姆的文件“组成随机换位”使用。
This paper explores the mixing time of the random transposition walk on the symmetric group. While it has long been known that this walk mixes in order n*log(n) time, this result has not previously been attained using coupling. A coupling argument showing the correct order mixing time is presented. This is accomplished by first projecting to conjugacy classes, and then using the Bubley-Dyer path coupling construction. In order to obtain appropriate bounds on the time it takes the path coupling to meet, ideas from Schramm's paper "Compositions of Random Transpositions" are used.
随机 k 循环和聚结断裂链的混合时间
DOI: 10.1214/10-aop634
发表时间: 2011
期刊: The Annals of Probability
影响因子: --
作者:
Berestycki N
通讯作者: Berestycki N