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arXiv 2106.12948stat.ME
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累积关联函数的回归树和系综

Regression Trees and Ensembles 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,最近已经开始。在本文中,我们提出了一种新的方法来估计累积发病率曲线在竞争风险设置使用回归树和相关的集成估计。所提出的方法采用增强估计的Brier得分风险的主要基础上建设和修剪树,并导致使用现有的R包很容易实现的方法。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 comparatively recently. In this paper, we propose a novel approach to estimating cumulative incidence curves in a competing risks setting using regression trees and associated ensemble estimators. The proposed methods employ augmented estimators of the Brier score risk as the primary basis for building and pruning trees, and lead to methods that are easily implemented using existing R packages. 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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