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arXiv 0810.2890math.PR
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Stein方法与Rademacher泛函的随机分析

Stein's method and stochastic analysis of Rademacher functionals

Ivan Nourdin, Giovanni Peccati, Gesine Reinert

摘要:

我们计算显式的边界在高斯近似的泛函的无限Rademacher序列。我们的工具涉及斯坦的方法,以及使用适当的离散Malliavin运营商。虽然我们的方法不需要经典的使用可交换对,我们采用了混沌扩展,以构建一个明确的可交换对向量的任何随机变量,这取决于一个有限集的Rademacher变量。在几个例子中,其中包括随机变量依赖于无限多Rademacher变量,我们提供了三个主要的应用:(一)CLTs的多重线性型属于一个固定的混乱,(二)高斯近似加权无限2-运行,(三)计算显式界限CLTs的多重积分在稀疏集。这最后一个应用程序提供了一个替代的证明(和几个改进)最近的结果由布莱和詹森。

英文摘要:

We compute explicit bounds in the Gaussian approximation of functionals of infinite Rademacher sequences. Our tools involve Stein's method, as well as the use of appropriate discrete Malliavin operators. Although our approach does not require the classical use of exchangeable pairs, we employ a chaos expansion in order to construct an explicit exchangeable pair vector for any random variable which depends on a finite set of Rademacher variables. Among several examples, which include random variables which depend on infinitely many Rademacher variables, we provide three main applications: (i) to CLTs for multilinear forms belonging to a fixed chaos, (ii) to the Gaussian approximation of weighted infinite 2-runs, and (iii) to the computation of explicit bounds in CLTs for multiple integrals over sparse sets. This last application provides an alternate proof (and several refinements) of a recent result by Blei and Janson.

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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