arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2107.09586stat.ME
收藏

稀疏复合似然选择

Sparse composite likelihood selection

Claudia Di Caterina, Davide Ferrari

摘要:

在参数$p$的数量很大的情况下,复合似然法显示出了希望,因为它能够将复杂的模型分解为更简单的组件,从而即使在完全似然法不容易处理的情况下也能够进行推断。虽然有许多方法来制定一个有效的复合似然在有限的$p$设置,似乎并没有存在关于如何构建复合似然,计算效率和统计上的声音时,允许$p$发散的协议。本文介绍了一种方法来选择稀疏的复合似然最小化的标准,代表隐含估计的统计效率加上$L_1$ -惩罚,不鼓励包括太多的子似然条款。一致的模型选择发生的条件进行了研究。举例说明的程序进行了详细分析,并应用于实际数据。

英文摘要:

Composite likelihood has shown promise in settings where the number of parameters $p$ is large due to its ability to break down complex models into simpler components, thus enabling inference even when the full likelihood is not tractable. Although there are a number of ways to formulate a valid composite likelihood in the finite-$p$ setting, there does not seem to exist agreement on how to construct composite likelihoods that are comp utationally efficient and statistically sound when $p$ is allowed to diverge. This article introduces a method to select sparse composite likelihoods by minimizing a criterion representing the statistical efficiency of the implied estimator plus an $L_1$-penalty discouraging the inclusion of too many sub-likelihood terms. Conditions under which consistent model selection occurs are studied. Examples illustrating the procedure are analysed in detail and applied to real data.

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。

↑