arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.05297math.STcs.CGstat.COstat.MEstat.TH
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解流形及其统计应用

Solution manifold and Its Statistical Applications

Yen-Chi Chen

摘要:

解流形是$d$维空间中满足具有$s<d$的$s$方程组的点的集合。解流形出现在几个统计问题中,包括假设检验、曲指数族、约束混合模型、部分识别和非参数集估计。我们从理论上和算法上分析了解流形。在理论上,我们得到了五个有用的结果:光滑性定理,稳定性定理(它包含了插入估计的一致性),梯度流的收敛性,局部中心流形定理和梯度下降算法的收敛性。为了在数值上逼近解流形,我们提出了一种蒙特卡罗梯度下降算法。在似然推断的情况下,我们设计了一个流形约束最大化过程来找到流形上的最大似然估计。我们还开发了一种方法来近似解流形上定义的后验分布。

英文摘要:

A solution manifold is the collection of points in a $d$-dimensional space satisfying a system of $s$ equations with $s<d$. Solution manifolds occur in several statistical problems including hypothesis testing, curved-exponential families, constrained mixture models, partial identifications, and nonparametric set estimation. We analyze solution manifolds both theoretically and algorithmically. In terms of theory, we derive five useful results: the smoothness theorem, the stability theorem (which implies the consistency of a plug-in estimator), the convergence of a gradient flow, the local center manifold theorem and the convergence of the gradient descent algorithm. To numerically approximate a solution manifold, we propose a Monte Carlo gradient descent algorithm. In the case of likelihood inference, we design a manifold constraint maximization procedure to find the maximum likelihood estimator on the manifold. We also develop a method to approximate a posterior distribution defined on a solution manifold.

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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