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• W2994693755 abstract "This paper considers robust modeling of the survival time for cancer patients. Accurate prediction can be helpful for developing therapeutic and care strategies. We propose a unified Expectation-Maximization approach combined with the L1-norm penalty to perform variable selection and obtain parameter estimation simultaneously for the accelerated failure time model with right-censored survival data. Our approach can be used with general loss functions, and reduces to the well-known Buckley-James method when the squared-error loss is used without regularization. To mitigate the effects of outliers and heavy-tailed noise in the real application, we advocate the use of robust loss functions under our proposed framework. Simulation studies are conducted to evaluate the performance of the proposed approach with different loss functions, and an application to an ovarian carcinoma study is provided. Meanwhile, we extend our approach by incorporating the group structure of covariates." @default.
• W2994693755 created "2019-12-26" @default.
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• W2994693755 date "2019-12-20" @default.
• W2994693755 modified "2023-09-30" @default.
• W2994693755 title "Robust Estimation and Variable Selection for the Accelerated Failure Time Model" @default.
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• W2994693755 doi "https://doi.org/10.48550/arxiv.1912.09664" @default.
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