arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.06706stat.MEstat.ML
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累积关联函数的回归树

Regression Trees for Cumulative Incidence Functions

Youngjoo Cho, Annette M. Molinaro, Chen Hu, Robert L. Strawderman

摘要:

在过去的十年中,使用累积发生率函数来表征一种类型的事件在其他事件存在下的风险变得越来越流行。建模,估计和推理的问题已经处理使用参数,非参数和半参数的方法。开发机器学习方法的适当扩展的努力,例如回归树和相关的集成方法,最近才开始。在本文中,我们开发了一种新的方法来建立回归树估计累积发病率曲线在竞争风险设置。所提出的方法采用增强估计的Brier得分的风险作为主要的基础上建设和修剪树木。所提出的方法很容易使用R统计软件包实现。仿真研究表明,我们的方法在竞争风险设置的效用。来自放射治疗肿瘤组(试验9410)的数据用于说明这些新方法。

英文摘要:

The use of cumulative incidence functions for characterizing the risk of one type of event in the presence of others has become increasingly popular over the past decade. The problems of modeling, estimation and inference have been treated using parametric, nonparametric and semi-parametric methods. Efforts to develop suitable extensions of machine learning methods, such as regression trees and related ensemble methods, have begun only recently. In this paper, we develop a novel approach to building regression trees for estimating cumulative incidence curves in a competing risks setting. The proposed methods employ augmented estimators of the Brier score risk as the primary basis for building and pruning trees. The proposed methods are easily implemented using the R statistical software package. Simulation studies demonstrate the utility of our approach in the competing risks setting. Data from the Radiation Therapy Oncology Group (trial 9410) is used to illustrate these new methods.

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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