Nonparametric inference for censored data using deep neural networks

• 成果类型: Article; Early Access
• 署名作者: Su, Wen; Wu, Qiang; Liu, Kin-Yat; Yin, Guosheng; Huang, Jian; Zhao, Xingqiu
• 署名单位: City University of Hong Kong; Hong Kong Polytechnic University; Chinese University of Hong Kong; University of Hong Kong
• 刊物名称: JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES B-STATISTICAL METHODOLOGY
• ISSN/ISSBN: 1369-7412; 1467-9868
• DOI: 10.1093/jrsssb/qkag060
• 发表日期: 2026-04-02
• 关键词: Asymptotic Normality; asymptotic power; censored data; Goodness-of-fit; Neural Networks; nonparametric inference; regression-models; linear-regression; survival; tests; parameters

摘要

We propose a novel deep learning approach to nonparametric statistical inference for the conditional hazard function of survival time with right-censored data. We use a deep neural network (DNN) to approximate the logarithm of a conditional hazard function given covariates and obtain a DNN likelihood-based estimator of the conditional hazard function. Such an estimation approach enhances model flexibility and hence relaxes structural and functional assumptions on conditional hazard or survival functions. We establish the nonasymptotic error bound and functional asymptotic normality of the proposed estimator. Subsequently, we develop new one-sample tests for goodness-of-fit evaluation and two-sample tests for treatment comparison. Notably, we design a new test specifically tailored for testing nonparametric Cox models. The consistency of these tests is established by analyzing the power functions. Both simulation studies and real application analysis show superior performances of the proposed estimators and tests in comparison with existing methods.