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In this paper, we expand the methodology presented in Mertens et. al (2020, Biometrical Journal) to the study of life-time (survival) outcome which is subject to censoring and when imputation is used to account for missing values. We…

统计方法学 · 统计学 2021-05-06 Bart J. A. Mertens

There is a fast-growing literature on estimating optimal treatment rules directly by maximizing the expected outcome. In biomedical studies and operations applications, censored survival outcome is frequently observed, in which case the…

统计方法学 · 统计学 2026-03-12 Yifan Cui , Junyi Liu , Tao Shen , Zhengling Qi , Xi Chen

The main objective of this paper is to apply linear and pretest shrinkage estimation techniques to estimating the parameters of two 2-parameter Burr-XII distributions. Further more, predictions for future observations are made using both…

统计方法学 · 统计学 2024-01-09 Soheila Akbari Bargoshadi , Hossein Bevrani

Conformal regression provides prediction intervals with global coverage guarantees, but often fails to capture local error distributions, leading to non-homogeneous coverage. We address this with a new adaptive method based on rescaling…

机器学习 · 计算机科学 2023-06-01 Nicolas Deutschmann , Mattia Rigotti , Maria Rodriguez Martinez

In a standard classification framework a set of trustworthy learning data are employed to build a decision rule, with the final aim of classifying unlabelled units belonging to the test set. Therefore, unreliable labelled observations,…

应用统计 · 统计学 2019-11-20 Andrea Cappozzo , Francesca Greselin , Thomas Brendan Murphy

In this paper, we study the behavior of a kernel estimator of the regression function in the right censored model with $\alpha$-mixing data . The uniform strong consistency over a real compact set of the estimate is established along with a…

统计理论 · 数学 2008-02-21 Zohra Guessoum , Elias Ould-Saïd

In this paper, we predict conditional survival functions through a combined regression strategy. We take weak learners as different random survival trees. We propose to maximize concordance in the right-censored set up to find the optimal…

机器学习 · 统计学 2022-10-12 Rahul Goswami , Arabin Kumar Dey

Discrimination and calibration represent two important properties of survival analysis, with the former assessing the model's ability to accurately rank subjects and the latter evaluating the alignment of predicted outcomes with actual…

机器学习 · 计算机科学 2024-06-04 Shi-ang Qi , Yakun Yu , Russell Greiner

Estimating individualized treatment rules is a central task for personalized medicine. [zhao2012estimating] and [zhang2012robust] proposed outcome weighted learning to estimate individualized treatment rules directly through maximizing the…

统计方法学 · 统计学 2017-10-02 Yifan Cui , Ruoqing Zhu , Michael Kosorok

It is often of interest to study the association between covariates and the cumulative incidence of a right-censored time-to-event outcome. When time-varying covariates are measured on a fixed discrete time scale, it is desirable to account…

统计方法学 · 统计学 2026-04-28 Hongxiang Qiu , Marco Carone , Alex Luedtke , Peter B. Gilbert

While the inverse probability of treatment weighting (IPTW) is a commonly used approach for treatment comparisons in observational data, the resulting estimates may be subject to bias and excessively large variance when there is lack of…

统计方法学 · 统计学 2024-02-13 Zhiqiang Cao , Lama Ghazi , Claudia Mastrogiacomo , Laura Forastiere , F. Perry Wilson , Fan Li

In this paper a new decision theoretic sampling plan (DSP) is proposed for Type-I censored exponential distribution. The proposed DSP is based on a new estimator of the expected lifetime of an exponential distribution which always exists,…

统计理论 · 数学 2018-06-18 Deepak Prajapati , Sharmistha Mitra , Debasis Kundu

Deep learning models achieve high predictive accuracy across a broad spectrum of tasks, but rigorously quantifying their predictive uncertainty remains challenging. Usable estimates of predictive uncertainty should (1) cover the true…

机器学习 · 计算机科学 2020-07-28 Ahmed M. Alaa , Mihaela van der Schaar

Linear regression is arguably the most prominent among statistical inference methods, popular both for its simplicity as well as its broad applicability. On par with data-intensive applications, the sheer size of linear regression problems…

应用统计 · 统计学 2016-06-29 Dimitris Berberidis , Vassilis Kekatos , Georgios B. Giannakis

We propose a general index model for survival data, which generalizes many commonly used semiparametric survival models and belongs to the framework of dimension reduction. Using a combination of geometric approach in semiparametrics and…

统计理论 · 数学 2017-10-17 Ge Zhao , Yanyuan Ma , Wenbin Lu

The subject of tail estimation for randomly censored data from a heavy tailed distribution receives growing attention, motivated by applications for instance in actuarial statistics. The bias of the available estimators of the extreme value…

统计方法学 · 统计学 2017-05-19 Jan Beirlant , Gaonyalelwe Maribe , Andrehette Verster

Adaptive experimentation enables efficient estimation of causal effects, but existing methods are not designed for survival data with censoring, where event times are only partially observed (e.g., overall survival in cancer trials but with…

机器学习 · 计算机科学 2026-05-19 Yuxin Wang , Dennis Frauen , Jonas Schweisthal , Maresa Schröder , Emil Javurek , Stefan Feuerriegel

In a widely cited paper, Xie and Liu (henceforth XL) proposed to use inverse probability of treatment weighting (IPTW) to account for possible confounding in observational studies with survival endpoints subject to right censoring. Their…

统计方法学 · 统计学 2025-11-04 Zhiwei Zhang , Yongwu Shao , Zhishen Ye

Previous deep learning approaches for survival analysis have primarily relied on ranking losses to improve discrimination performance, which often comes at the expense of calibration performance. To address such an issue, we propose a novel…

机器学习 · 计算机科学 2024-11-22 Dongjoon Lee , Hyeryn Park , Changhee Lee

Density estimation is a classical problem in statistics and has received considerable attention when both the data has been fully observed and in the case of partially observed (censored) samples. In survival analysis or clinical trials, a…

应用统计 · 统计学 2018-04-18 German A. Schnaidt Grez , Brani Vidakovic