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Determining whether a provided context contains sufficient information to answer a question is a critical challenge for building reliable question-answering systems. While simple prompting strategies have shown success on factual questions,…

计算与语言 · 计算机科学 2026-03-24 Akriti Jain , Aparna Garimella

Missing data is prevalent in tabular machine learning (ML) models, and different missing data treatment methods can significantly affect ML model training results. However, little is known about how ML researchers and engineers choose…

机器学习 · 计算机科学 2025-03-24 Wanyi Chen , Mary Cummings

Multiple imputation is a popular method for handling missing data, with fully conditional specification (FCS) being one of the predominant imputation approaches for multivariable missingness. Unbiased estimation with standard…

Decision trees are a popular family of models due to their attractive properties such as interpretability and ability to handle heterogeneous data. Concurrently, missing data is a prevalent occurrence that hinders performance of machine…

机器学习 · 计算机科学 2020-07-01 Pasha Khosravi , Antonio Vergari , YooJung Choi , Yitao Liang , Guy Van den Broeck

An active challenge in developing multimodal machine learning (ML) models for healthcare is handling missing modalities during training and deployment. As clinical datasets are inherently temporal and sparse in terms of modality presence,…

机器学习 · 计算机科学 2026-05-08 Andrew Wang , Ellie Pavlick , Ritambhara Singh

A fundamental challenge in observational causal inference is that assumptions about unconfoundedness are not testable from data. Assessing sensitivity to such assumptions is therefore important in practice. Unfortunately, some existing…

统计方法学 · 统计学 2019-01-15 Alexander Franks , Alexander D'Amour , Avi Feller

Missing data, the data value that is not recorded for a variable, occurs in almost all statistical analyses and may be caused by many reasons, such as lack of collection or a lack of documentation. Researchers need to adequately deal with…

人机交互 · 计算机科学 2024-10-08 Sarah Alsufyani , Matthew Forshaw , Sara Johansson Fernstad

Measurement error (ME) and missing values in covariates are often unavoidable in disciplines that deal with data, and both problems have separately received considerable attention during the past decades. However, while most researchers are…

统计方法学 · 统计学 2023-03-28 Emma Sofie Skarstein , Sara Martino , Stefanie Muff

Electronic health record (EHR) data has emerged as a valuable resource for analyzing patient health status. However, the prevalence of missing data in EHR poses significant challenges to existing methods, leading to spurious correlations…

机器学习 · 计算机科学 2024-05-16 Zhihao Yu , Xu Chu , Yujie Jin , Yasha Wang , Junfeng Zhao

We consider functional data which have only been observed on a subset of their domain. This paper aims to develop statistical tests to determine whether the function and the domain over which it is observed are independent. The assumption…

统计方法学 · 统计学 2025-12-04 Maximilian Ofner , Siegfried Hörmann , David Kraus , Dominik Liebl

We demonstrate a simple strategy to cope with missing data in sequential inputs, addressing the task of multilabel classification of diagnoses given clinical time series. Collected from the pediatric intensive care unit (PICU) at Children's…

机器学习 · 计算机科学 2016-11-14 Zachary C. Lipton , David C. Kale , Randall Wetzel

Earth observation (EO) applications involving complex and heterogeneous data sources are commonly approached with machine learning models. However, there is a common assumption that data sources will be persistently available. Different…

机器学习 · 计算机科学 2024-10-15 Francisco Mena , Diego Arenas , Marcela Charfuelan , Marlon Nuske , Andreas Dengel

An increasing number of large-scale multi-modal research initiatives has been conducted in the typically developing population, as well as in psychiatric cohorts. Missing data is a common problem in such datasets due to the difficulty of…

We consider the optimization of an uncertain objective over continuous and multi-dimensional decision spaces in problems in which we are only provided with observational data. We propose a novel algorithmic framework that is tractable,…

机器学习 · 统计学 2018-10-30 Dimitris Bertsimas , Christopher McCord

In clinical practice and biomedical research, measurements are often collected sparsely and irregularly in time while the data acquisition is expensive and inconvenient. Examples include measurements of spine bone mineral density, cancer…

机器学习 · 统计学 2021-08-05 Łukasz Kidziński , Trevor Hastie

The problem of missing data, usually absent incurated and competition-standard datasets, is an unfortunate reality for most machine learning models used in industry applications. Recent work has focused on understanding the nature and the…

In this paper we recast the problem of missing values in the covariates of a regression model as a latent Gaussian Markov random field (GMRF) model in a fully Bayesian framework. Our proposed approach is based on the definition of the…

统计计算 · 统计学 2019-12-24 Virgilio Gómez-Rubio , Michela Cameletti , Marta Blangiardo

Clinical trials that investigate interventions on physical activity often use accelerometers to measure step count at a very granular level, often in 5-second epochs. Participants typically wear the accelerometer for a week-long period at…

We provide an approach to exploratory data analysis in matched observational studies with a single intervention and multiple endpoints. In such settings, the researcher would like to explore evidence for actual treatment effects among these…

统计方法学 · 统计学 2025-12-10 Mengqi Lin , Colin Fogarty

Deep generative frameworks including GANs and normalizing flow models have proven successful at filling in missing values in partially observed data samples by effectively learning -- either explicitly or implicitly -- complex,…

机器学习 · 计算机科学 2021-04-06 Edgar A. Bernal