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Across health applications, researchers model outcomes as a function of time to an event, but the event time is right-censored for participants who exit the study or otherwise do not experience the event during follow-up. When censoring…

统计方法学 · 统计学 2025-11-21 Jesus E. Vazquez , Yanyuan Ma , Karen Marder , Tanya P. Garcia

Win statistics, including the win ratio, net benefit, and win odds, summarize treatment effects on hierarchical composite endpoints by sequentially comparing patient pairs on component outcomes ordered by clinical importance, proceeding to…

统计方法学 · 统计学 2026-05-27 Xi Fang , Fan Li

We consider the problem of online allocation subject to a long-term fairness penalty. Contrary to existing works, however, we do not assume that the decision-maker observes the protected attributes -- which is often unrealistic in practice.…

机器学习 · 计算机科学 2023-12-05 Mathieu Molina , Nicolas Gast , Patrick Loiseau , Vianney Perchet

Estimation of the extreme value index under right censoring is a fundamental problem in extreme value theory, with important applications in finance, insurance, and reliability. Classical integral estimators for Pareto-type tails typically…

统计理论 · 数学 2026-05-14 Abdelhakim Necir , Nour Elhouda Guesmia , Djamel Meraghni

Treatment policy estimands are frequently favored by regulators, as they assess the effect of treatment assignment regardless of post-randomization events. Despite best efforts, missing data due to study discontinuation cannot be fully…

统计方法学 · 统计学 2026-05-13 Ajmal Oodally , Craig Wang , Zheng Li , Tim Morris , Tobias Mütze , Arunava Chakravartty

We propose and study M-estimation to estimate the parameters in the censored regression model in the presence of endogeneity, i.e., the Tobit model. In the course of this study, we follow two-stage procedures: the first stage consists of…

统计方法学 · 统计学 2025-05-13 Swati Shukla , Subhra Sankar Dhar , Shalabh

The issue of fairness in machine learning models has recently attracted a lot of attention as ensuring it will ensure continued confidence of the general public in the deployment of machine learning systems. We focus on mitigating the harm…

机器学习 · 统计学 2021-02-24 Thomas Kehrenberg , Zexun Chen , Novi Quadrianto

This paper outlines a Bayesian approach to estimate finite mixtures of Tobit models. The method consists of an MCMC approach that combines Gibbs sampling with data augmentation and is simple to implement. I show through simulations that the…

计量经济学 · 经济学 2024-11-18 Caio Waisman

We propose a new likelihood-based approach for estimation, inference and variable selection for parametric cure regression models in time-to-event analysis under random right-censoring. In this context, it often happens that some subjects…

统计方法学 · 统计学 2020-07-17 Kevin Burke , Valentin Patilea

Data values in a dataset can be missing or anomalous due to mishandling or human error. Analysing data with missing values can create bias and affect the inferences. Several analysis methods, such as principle components analysis or…

人工智能 · 计算机科学 2022-05-11 Sandeep Hans , Diptikalyan Saha , Aniya Aggarwal

The widespread use of machine learning and data-driven algorithms for decision making has been steadily increasing over many years. \emph{Bias} in the data can adversely affect this decision-making. We present a new mitigation strategy to…

机器学习 · 计算机科学 2025-07-25 Bruno Scarone , Alfredo Viola , Renée J. Miller , Ricardo Baeza-Yates

Selection bias arises when the probability that an observation enters a dataset depends on variables related to the quantities of interest, leading to systematic distortions in estimation and uncertainty quantification. For example, in…

The Student-$t$ distribution is widely used in statistical modeling of datasets involving outliers since its longer-than-normal tails provide a robust approach to hand such data. Furthermore, data collected over time may contain censored or…

In machine learning, a bias occurs whenever training sets are not representative for the test data, which results in unreliable models. The most common biases in data are arguably class imbalance and covariate shift. In this work, we aim to…

机器学习 · 计算机科学 2018-04-04 Patrick Glauner , Radu State , Petko Valtchev , Diogo Duarte

For job scheduling systems, where jobs require some amount of processing and then leave the system, it is natural for each user to provide an estimate of their job's time requirement in order to aid the scheduler. However, if there is no…

计算机科学与博弈论 · 计算机科学 2022-02-14 Isaac Grosof , Michael Mitzenmacher

This paper addresses the problem of identifying and estimating the causal effect of a treatment in the presence of unmeasured confounding and various types of right-censoring. Examples of these censoring mechanisms are administrative…

统计理论 · 数学 2025-03-19 Ilias Willems , Sara Rutten , Gilles Crommen , Ingrid Van Keilegom

Recently, many bias detection methods have been proposed to determine the level of bias a large language model captures. However, tests to identify which parts of a large language model are responsible for bias towards specific groups…

计算与语言 · 计算机科学 2025-08-12 Keshav Varadarajan , Tananun Songdechakraiwut

This report is designed to clarify a few points about the article "Semiparametric modeling of grouped current duration data with preferential reporting" by McLain, Sundaram, Thoma and Louis in Statistics in Medicine (McLain et al., 2014,…

应用统计 · 统计学 2018-01-03 Alexander C. McLain , Rajeshwari Sundaram , Marie Thoma , Germaine M. Buck Louis

Non-parametric maximum likelihood estimation encompasses a group of classic methods to estimate distribution-associated functions from potentially censored and truncated data, with extensive applications in survival analysis. These methods,…

统计方法学 · 统计学 2021-08-05 Justin D. Tubbs , Lane Guolan Chen , Thuan Quoc Thach , Pak C. Sham

The analysis of randomized trials with time-to-event endpoints is nearly always plagued by the problem of censoring. As the censoring mechanism is usually unknown, analyses typically employ the assumption of non-informative censoring. While…

统计方法学 · 统计学 2020-07-17 Kelly Van Lancker , Oliver Dukes , Stijn Vansteelandt