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The task of analyzing extreme events with censoring effects is considered under a framework allowing for random covariate information. A wide class of estimators that can be cast as product-limit integrals is considered, for when the…

统计理论 · 数学 2024-08-14 Martin Bladt , Christoffer Øhlenschlæger

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

In this paper, a competing risks model is analyzed based on improved adaptive type-II progressive censored sample (IAT-II PCS). Two independent competing causes of failures are considered. It is assumed that lifetimes of the competing…

统计方法学 · 统计学 2023-02-20 Subhankar Dutta , Suchandan Kayal

Censoring occurs when an outcome is unobserved beyond some threshold value. Methods that do not account for censoring produce biased predictions of the unobserved outcome. This paper introduces Type I Tobit Bayesian Additive Regression Tree…

计量经济学 · 经济学 2024-02-21 Eoghan O'Neill

This paper proposes a robust Bayesian accelerated failure time model for censored survival data. We develop a new family of life-time distributions using a scale mixture of the generalized gamma distributions, where we propose a novel super…

统计方法学 · 统计学 2025-04-16 Yasuyuki Hamura , Takahiro Onizuka , Shintaro Hashimoto , Shonosuke Sugasawa

Based on independent progressively Type-II censored samples from two-parameter Rayleigh distributions with the same location parameter but different scale parameters, the UMVUE and maximum likelihood estimator of $R=P(Y<X)$ are obtained.…

应用统计 · 统计学 2017-09-05 Akram Kohansal , Saeid Rezakhah

The Weibull distribution is one of the most used tools in reliability analysis. In this paper, assuming a Bayesian approach, we propose necessary and sufficient conditions to verify when improper priors lead to proper posteriors for the…

统计理论 · 数学 2020-05-19 Eduardo Ramos , Pedro L. Ramos

Interval-censored data, in which the event time is only known to lie in some time interval, arise commonly in practice; for example, in a medical study in which patients visit clinics or hospitals at pre-scheduled times, and the events of…

统计方法学 · 统计学 2017-07-21 Wei Fu , Jeffrey S. Simonoff

This study aims to predict failure times for some units in some lifetime experiments. In some practical situations, the experimenter may not be able to register the failure times of all units during the experiment. Recently, this situation…

统计理论 · 数学 2023-04-13 Mahmoud Mansour , Mohamed Aboshady

We present a unified parametric framework for modal regression applicable to continuous positive distributions, with explicit support for right-censored observations. The key contribution is a systematic analytical reparameterization of…

统计方法学 · 统计学 2026-03-10 Christian E. Galarza , Víctor H. Lachos

We propose a unified framework for likelihood-based regression modeling when the response variable has finite support. Our work is motivated by the fact that, in practice, observed data are discrete and bounded. The proposed methods assume…

统计方法学 · 统计学 2022-09-13 Karl Oskar Ekvall , Matteo Bottai

Censored survival data are common in clinical trial studies. We propose a unified framework for sensitivity analysis to censoring at random in survival data using multiple imputation and martingale, called SMIM. The proposed framework…

统计方法学 · 统计学 2021-05-17 Shu Yang , Yilong Zhang , Guanghan Frank Liu , Qian Guan

Family studies provide an important tool for understanding etiology of diseases, with the key aim of discovering evidence of family aggregation and to determine if such aggregation can be attributed to genetic components. Heritability and…

统计方法学 · 统计学 2015-01-27 Klaus K. Holst , Thomas H. Scheike , Jacob B. Hjelmborg

Progressive multi-state survival outcomes are common in trials with recurrent or sequential events and require treatment effect estimands that remain interpretable without proportional intensity or Markov assumptions. The restricted mean…

统计方法学 · 统计学 2026-01-22 Xi Fang , Bingkai Wang , Guangyu Tong , Liangyuan Hu , Shuangge Ma , Fan Li

We provide efficient algorithms for the problem of distribution learning from high-dimensional Gaussian data where in each sample, some of the variable values are missing. We suppose that the variables are missing not at random (MNAR). The…

机器学习 · 计算机科学 2025-04-29 Arnab Bhattacharyya , Constantinos Daskalakis , Themis Gouleakis , Yuhao Wang

In extreme value analysis, the extreme value index plays a vital role as it determines the tail heaviness of the underlying distribution and is the primary parameter required for the estimation of other extreme events. In this paper, we…

统计计算 · 统计学 2017-09-27 Richard Minkah , Tertius de Wet , Ezekiel Nii Noi Nortey

Consider a random vector (X',Y)', where X is d-dimensional and Y is one-dimensional. We assume that Y is subject to random right censoring. The aim of this paper is twofold. First, we propose a new estimator of the joint distribution of…

统计理论 · 数学 2013-09-18 Olivier Lopez , Valentin Patilea , Ingrid Van Keilegom

The restricted mean survival time is a clinically easy-to-interpret measure that does not require any assumption of proportional hazards. We focus on two ways to directly model the survival time and adjust the covariates. One is to…

统计方法学 · 统计学 2022-11-03 Keisuke Hanada , Junji Moriya , Masahiro Kojima

A Hybrid censoring scheme is mixture of Type-I and Type-II censoring schemes. Based on hybrid censored samples, this paper deals with the in- ference on R = P(X > Y ), when X and Y are two independent Weibull distributions with different…

其他统计学 · 统计学 2017-07-20 Akbar Asgharzadeh , Mohammad Kazemi , Debasis Kundu

We describe a new approach to estimating relative risks in time-to-event prediction problems with censored data in a fully parametric manner. Our approach does not require making strong assumptions of constant proportional hazard of the…

机器学习 · 计算机科学 2021-06-10 Chirag Nagpal , Xinyu Rachel Li , Artur Dubrawski