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arXiv 1807.05935cs.LGstat.ML
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竞争风险下的暹罗生存分析

Siamese Survival Analysis with Competing Risks

University of California, Los Angeles(加州大学洛杉矶分校);University of Oxford(牛津大学);Alan Turing Institute(艾伦·图灵研究所)

Anton Nemchenko, Trent Kyono, Mihaela Van Der Schaar

摘要:

存在多种可能不良事件的生存分析,即,竞争风险是许多行业(医疗保健、金融等)中普遍存在的问题。由于通常只观察到一个事件,因此感兴趣的事件的发生率通常被其他相关的竞争事件所掩盖。这种不可识别性,或无法从经验数据中估计真正的病因特异性生存曲线,进一步使竞争风险生存分析复杂化。我们介绍了Siamese Survival Prognosis Network(SSPN),这是一种新颖的深度学习架构,用于在存在竞争风险的情况下估计个性化风险评分。SSPN通过避免估计原因特异性生存曲线来规避不可识别性问题,而是确定成对一致的时间依赖性风险,其中较长的事件时间被分配为较低的风险。此外,SSPN能够直接优化C-判别指数的近似值,而不是依赖于众所周知的指标,这些指标无法捕获具有竞争风险的生存分析的独特要求。

英文摘要:

Survival analysis in the presence of multiple possible adverse events, i.e., competing risks, is a pervasive problem in many industries (healthcare, finance, etc.). Since only one event is typically observed, the incidence of an event of interest is often obscured by other related competing events. This nonidentifiability, or inability to estimate true cause-specific survival curves from empirical data, further complicates competing risk survival analysis. We introduce Siamese Survival Prognosis Network (SSPN), a novel deep learning architecture for estimating personalized risk scores in the presence of competing risks. SSPN circumvents the nonidentifiability problem by avoiding the estimation of cause-specific survival curves and instead determines pairwise concordant time-dependent risks, where longer event times are assigned lower risks. Furthermore, SSPN is able to directly optimize an approximation to the C-discrimination index, rather than relying on well-known metrics which are unable to capture the unique requirements of survival analysis with competing risks.

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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