arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2010.04058stat.MEstat.CO
收藏

基于混合的熵估计

Mixture-based estimation of entropy

Stéphane Robin, Luca Scrucca

摘要:

熵是对不确定性的度量,在信息论中起着核心作用。当数据的分布未知时,需要从数据样本本身获得熵的估计。我们提出了一个半参数估计,基于混合模型近似的分布的兴趣。估计可以依赖于任何类型的混合,但我们专注于高斯混合模型,以证明其准确性和通用性。所提出的方法的性能进行评估,通过一系列的模拟研究。我们还说明了它的使用在两个现实生活中的数据的例子。

英文摘要:

The entropy is a measure of uncertainty that plays a central role in information theory. When the distribution of the data is unknown, an estimate of the entropy needs be obtained from the data sample itself. We propose a semi-parametric estimate, based on a mixture model approximation of the distribution of interest. The estimate can rely on any type of mixture, but we focus on Gaussian mixture model to demonstrate its accuracy and versatility. Performance of the proposed approach is assessed through a series of simulation studies. We also illustrate its use on two real-life data examples.

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。

↑