Mixing times of Markov chains for self‐organizing lists and biased permutations
Mixing times of Markov chains for self‐organizing lists and biased permutations
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用于自组织列表和有偏排列的马尔可夫链的混合时间
DOI:
10.1002/rsa.21082
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发表时间:
2022
影响因子:
1
通讯作者:
Streib, Amanda Pascoe
中科院分区:
文献类型:
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作者:
Bhakta, Prateek;Miracle, Sarah;Randall, Dana;Streib, Amanda Pascoe
We study the mixing time of a Markov chain on biased permutations, a problem related to self‐organizing lists. We are given probabilities {pi,j},$$ \left\{{p}_{i,j}\right\}, $$ for all i≠j,$$ i\ne j, $$ such that pi,j=1−pj,i$$ {p}_{i,j}=1-{p}_{j,i} $$. The chain ℳnn$$ {\mathcal{M}}_{nn} $$ iteratively chooses two adjacent elements i$$ i $$ and j$$ j $$, and swaps them with probability pi,j$$ {p}_{i,j} $$. It has been conjectured that ℳnn$$ {\mathcal{M}}_{nn} $$ is rapidly mixing whenever the set of probabilities are “positively biased,” that is, {pi,j≥1/2},$$ \left\{{p}_{i,j}\ge 1/2\right\}, $$ for all i<j$$ i<j $$. We define two general classes and give the first proofs that ℳnn$$ {\mathcal{M}}_{nn} $$ is rapidly mixing for both. We also demonstrate that the chain can have exponential mixing time, disproving the most general version of this conjecture.
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DOI:
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发表时间:
1982-07
期刊:
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影响因子:
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作者:
P. Flajolet
通讯作者:
P. Flajolet
DOI:
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发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
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影响因子:
1.3
作者:
I. Benjamini;Noam Berger;C. Hoffman;Elchanan Mossel
通讯作者:
Elchanan Mossel
影响因子:
1.3
作者:
Sam Greenberg;A. Streib;Dana Randall
通讯作者:
Dana Randall
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
P. Diaconis;L. Saloff‐Coste
通讯作者:
L. Saloff‐Coste