返回
摘要
En 中文
Variable selection methods and model selection approaches are valuable statistical tools that are indispensable for almost any statistical modeling question. This review first considers the use of information criteria for model selection. Such criteria provide an ordering of the considered models where the best model is selected. Different modeling goals might require different criteria to be used. Next, the effect of including a penalty in the estimation process is discussed. Third, nonparametric estimation is discussed; it contains several aspects of model choice, such as the choice of the estimator to use and the selection of tuning parameters. Fourth, model averaging approaches are reviewed in which estimators from different models are weighted to provide one final estimator. There are several ways to choose the weights, and most of them result in data-driven, hence random, weights. Challenges for inference after model selection and inference for model-averaged estimators are discussed.
Keyword:
model selection
variable selection
information criteria
model averaging
AI总结
对已上传原文的论文进行重点信息的提取,主要内容包括:简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
8.7
论文数:
211
被引数:
2.4K
机构
引用论文
Li2TeS3 and Li2TeSe3: Preparation, Crystal Structure and Impedance Spectroscopic CharacterizationLi2TeS3 和Li2TeSe3: 制备,晶体结构和阻抗光谱表征
PARAMETRIC OR NONPARAMETRIC? A PARAMETRICNESS INDEX FOR MODEL SELECTION参数还是非参数?模型选择的参数化指标
ANNALS OF STATISTICS
IF3.7

