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分类依据与纠错

AI 根据所提供的论文材料归类:摘要直接研究混杂与删失下的反事实生存曲线、处理收益和双重稳健因果推断。

反馈分类问题

Targeted Deep Survival Contrasts: Valid Inference for Treatment-Specific Survival Benefit with Neural Networks

靶向深度生存对比:神经网络下处理特定生存收益的有效推断

正在核对关联版本…

代码、数据与补充材料

正在核对对应版本的资源…

关注这篇论文的作者
David McCoy
Yi Li

靶向深度生存对比:神经网络下处理特定生存收益的有效推断

研究问题
在观察数据存在混杂和依赖协变量的删失时,如何用神经网络估计处理特定生存曲线及其差异,并构造有效同时置信带?
方法与思路
作者在网络权重空间实施联合靶向更新,以影响函数残差作一步补正,并通过交叉拟合和乘子自助法开展联合推断。
材料陈述的贡献
摘要称,该方法建立联合渐近线性和置信带理论;残差补正具有双重稳健性,并在结果模型严重错误时恢复目标推断。
阅读关注点
核对投影工作参数与不受限因果目标的区别、删失和混杂的识别条件,以及补正、交叉拟合和置信带的成立要求。
阅读边界
所据为 arXiv 预印本,同行评审或期刊接收未经核实;模拟数值仅限所述设定,摘要明确报告未补正版本在错设时可能失效。

原文摘要

Neural survival models are increasingly asked to support counterfactual claims---how much a treatment would change survival in a population---rather than only prognostic risk scores. Answering such questions from observational data requires valid inference for treatment-specific survival contrasts under confounding and covariate-dependent censoring, targets for which standard deep survival estimators are biased and provide no honest uncertainty. We propose Targeted Deep Survival Contrasts (TDSC), which extends Targeted Deep Architectures (TDA)---targeted maximum likelihood estimation embedded in a network's weight space---to the full vector of treatment-specific survival curves over a time grid, and hence to the benefit curve and the restricted mean survival time (RMST) difference. A single universal targeting path, one ridge projection of the stacked efficient influence functions onto closed-form last-layer gradients per iteration, simultaneously solves the projected estimating equations for all coordinates; a one-step residual top-up converts the plug-in into a doubly robust estimator of the unrestricted target; and a multiplier bootstrap yields simultaneous confidence bands for the benefit curve. We prove joint asymptotic linearity, band validity, and double robustness of the top-up for a cross-fitted variant requiring no Donsker conditions. Across seven Monte Carlo banks with confounded treatment, sign-varying effect heterogeneity, and dependent censoring, the TDSC plug-in attains nominal pointwise and simultaneous coverage with 35% lower MSE than a per-timepoint one-step (AIPCW) built from the same nuisance fits. Under a badly wrong outcome model the plug-in tracks its working parameter and its intervals fail (44% coverage), while the top-up restores nominal inference for the unrestricted causal target (94-95%)---and in-sample diagnostics separate the two regimes.

笔记与分组