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arXiv math/0503521math.PR
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随机瓮模型的渐近性

Asymptotics in randomized urn models

Zhi-Dong Bai, Feifang Hu

摘要:

本文研究了一个由临床试验中的设计所激励的非常一般的骨灰盒模型,其中在试验n时添加到骨灰盒中的不同类型的球的数量取决于在试验1,2,. n-1。根据球的类型分配患者治疗。我们建立了强一致性和渐近正态性的骨灰盒组成和病人分配的随机生成矩阵,决定如何添加到骨灰盒的一般假设。此外,我们获得了明确的形式的渐近方差-协方差阵的瓮组成和病人的分配。生成矩阵非齐性的条件是温和的,在应用中得到了广泛的满足。几个应用程序也进行了讨论。

英文摘要:

This paper studies a very general urn model stimulated by designs in clinical trials, where the number of balls of different types added to the urn at trial n depends on a random outcome directed by the composition at trials 1,2,...,n-1. Patient treatments are allocated according to types of balls. We establish the strong consistency and asymptotic normality for both the urn composition and the patient allocation under general assumptions on random generating matrices which determine how balls are added to the urn. Also we obtain explicit forms of the asymptotic variance-covariance matrices of both the urn composition and the patient allocation. The conditions on the nonhomogeneity of generating matrices are mild and widely satisfied in applications. Several applications are also discussed.

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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