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首页> 外文期刊>Journal of Theoretical Probability >Convergence of U-Statistics for Interacting Particle Systems
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Convergence of U-Statistics for Interacting Particle Systems

机译:相互作用粒子系统的U统计量的收敛性

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摘要

The convergence of U-statistics has been intensively studied for estimators based on families of i.i.d. random variables and variants of them. In most cases, the independence assumption is crucial (Lee in Statistics: Textbooks and Monographs, vol. 10, Dekker, New York, 1990; de la Peña and Giné in Decoupling. Probability and Its Application, Springer, New York, 1999). When dealing with Feynman–Kac and other interacting particle systems of Monte Carlo type, one faces a new type of problem. Namely, in a sample of N particles obtained through the corresponding algorithms, the distributions of the particles are correlated—although any finite number of them is asymptotically independent with respect to the total number N of particles. In the present article, exploiting the fine asymptotics of particle systems, we prove convergence theorems for U-statistics in this framework.
机译:对于基于i.i.d族的估计量,已对U统计量的收敛进行了深入研究。随机变量及其变体。在大多数情况下,独立性假设是至关重要的(《里氏统计:教科书和专着》,第10卷,纽约,德克,1990年; de laPeña和Giné在《解耦:概率及其应用》中,史普林格,纽约,1999年)。当处理Feynman-Kac和其他蒙特卡洛类型的相互作用粒子系统时,会面临一种新类型的问题。即,在通过相应算法获得的N个粒子的样本中,粒子的分布是相关的-尽管它们的任何有限数量相对于粒子总数N都是渐近独立的。在本文中,我们利用粒子系统的精细渐近性,证明了该框架下U统计量的收敛定理。

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