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arXiv 0811.3705math.STstat.TH
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基于分歧和对偶技术的参数估计和检验

Parametric estimation and tests through divergences and duality technique

Michel Broniatowski, Amor Keziou

摘要:

我们通过离散或连续参数模型的发散优化介绍估计和检验程序。这种方法是基于一个新的对偶表示的分歧。我们对待点估计和测试简单和复合假设,扩展最大似然技术。另一种观点在最大似然法,估计和测试,给出。我们证明了所提出的估计的存在性和一致性。在零假设和备择假设下,给出了估计和检验统计量(包括广义似然比检验统计量)的极限律,并推导了幂函数的逼近式.当参数可以是参数空间的边界值时,提出了一种构造置信区域的新方法。同时,对广义似然比检验中与混合样本个数有关的不规则性问题给出了解决方法,并基于符号有限测度上的$χ^{2}$ -散度和对偶技术提出了一种新的检验方法.

英文摘要:

We introduce estimation and test procedures through divergence optimization for discrete or continuous parametric models. This approach is based on a new dual representation for divergences. We treat point estimation and tests for simple and composite hypotheses, extending maximum likelihood technique. An other view at the maximum likelihood approach, for estimation and test, is given. We prove existence and consistency of the proposed estimates. The limit laws of the estimates and test statistics (including the generalized likelihood ratio one) are given both under the null and the alternative hypotheses, and approximation of the power functions is deduced. A new procedure of construction of confidence regions, when the parameter may be a boundary value of the parameter space, is proposed. Also, a solution to the irregularity problem of the generalized likelihood ratio test pertaining to the number of components in a mixture is given, and a new test is proposed, based on $χ^{2}$-divergence on signed finite measures and duality technique.

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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