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arXiv 2004.00715stat.COstat.ML
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基于近似KLD的似然模型试验设计

An approximate KLD based experimental design for models with intractable likelihoods

Ziqiao Ao, Jinglai Li

摘要:

数据收集是统计推断和数据科学的关键步骤,而统计试验设计(ED)的目标是找到能为推断提供最多信息的数据收集设置。在这项工作中,我们考虑一种特殊类型的ED问题的可能性是不是在一个封闭的形式。在这种情况下,不能直接使用流行的基于信息论的库尔贝克-莱布勒散度(KLD)设计准则,因为它需要评估似然函数。为了解决这个问题,我们推导出一个新的效用函数,这是原来的KLD效用的下限。该下限用数据空间中的两个或更多个熵的总和来表示,因此可以通过熵估计方法有效地进行评估。我们提供了几个数值例子来证明所提出的方法的性能。

英文摘要:

Data collection is a critical step in statistical inference and data science, and the goal of statistical experimental design (ED) is to find the data collection setup that can provide most information for the inference. In this work we consider a special type of ED problems where the likelihoods are not available in a closed form. In this case, the popular information-theoretic Kullback-Leibler divergence (KLD) based design criterion can not be used directly, as it requires to evaluate the likelihood function. To address the issue, we derive a new utility function, which is a lower bound of the original KLD utility. This lower bound is expressed in terms of the summation of two or more entropies in the data space, and thus can be evaluated efficiently via entropy estimation methods. We provide several numerical examples to demonstrate the performance of the proposed method.

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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