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Joint modeling has become increasingly popular for characterizing the association between one or more longitudinal biomarkers and competing risks time-to-event outcomes. However, semiparametric multivariate joint modeling for large-scale…

统计方法学 · 统计学 2025-06-17 Shanpeng Li , Emily Ouyang , Jin Zhou , Xinping Cui , Gang Li

Machine learning models have exhibited exceptional results in various domains. The most prevalent approach for learning is the empirical risk minimizer (ERM), which adapts the model's weights to reduce the loss on a training set and…

机器学习 · 计算机科学 2024-12-11 Koby Bibas

Unlike natural images, medical images often have intrinsic characteristics that can be leveraged for neural network learning. For example, images that belong to different stages of a disease may continuously follow a certain progression…

计算机视觉与模式识别 · 计算机科学 2019-05-29 Qicheng Lao , Thomas Fevens , Boyu Wang

To extend cognitive diagnostic models (CDMs) to longitudinal settings, stepwise approaches that integrate a CDM model with a latent transition model and covariates are widely used due to their flexibility. Previous research has shown that…

统计方法学 · 统计学 2026-04-20 Yawen Ma , Anastasia Ushakova , Kate Cain , Gabriel Wallin

In industrial experiments, controlling variability is of paramount importance to ensure product quality. Classical regression models for mixture experiments are widely used in industry, however, when the assumption of constant variance is…

统计方法学 · 统计学 2022-06-07 Edmilson Rodrigues Pinto , Leandro Alves Pereira

Atypical Parkinsonian Disorders (APD), also known as Parkinson-plus syndrome, are a group of neurodegenerative diseases that include progressive supranuclear palsy (PSP) and multiple system atrophy (MSA). In the early stages, overlapping…

计算机视觉与模式识别 · 计算机科学 2026-04-16 Mengyu Li , Ingibjörg Kristjánsdóttir , Thilo van Eimeren , Kathrin Giehl , Lotta M. Ellingsen , the ASAP Neuroimaging Initiative

Knowing the uncertainty in a prediction is critical when making expensive investment decisions and when patient safety is paramount, but machine learning (ML) models in drug discovery typically provide only a single best estimate and ignore…

机器学习 · 计算机科学 2021-06-03 Stanley E. Lazic , Dominic P. Williams

Energy-Based Models (EBMs) present a flexible and appealing way to represent uncertainty. Despite recent advances, training EBMs on high-dimensional data remains a challenging problem as the state-of-the-art approaches are costly, unstable,…

机器学习 · 计算机科学 2021-06-08 Will Grathwohl , Jacob Kelly , Milad Hashemi , Mohammad Norouzi , Kevin Swersky , David Duvenaud

This paper investigates two prominent probabilistic neural modeling paradigms: Bayesian Neural Networks (BNNs) and Mixture Density Networks (MDNs) for uncertainty-aware nonlinear regression. While BNNs incorporate epistemic uncertainty by…

统计计算 · 统计学 2025-10-30 Riddhi Pratim Ghosh , Ian Barnett

This paper studies the fundamental problem of learning multi-layer generator models. The multi-layer generator model builds multiple layers of latent variables as a prior model on top of the generator, which benefits learning complex data…

计算机视觉与模式识别 · 计算机科学 2023-10-13 Jiali Cui , Ying Nian Wu , Tian Han

Diagnosing Alzheimer's disease (AD) involves a deliberate diagnostic process owing to its innate traits of irreversibility with subtle and gradual progression. These characteristics make AD biomarker identification from structural brain…

机器学习 · 计算机科学 2022-07-28 Ahmad Wisnu Mulyadi , Wonsik Jung , Kwanseok Oh , Jee Seok Yoon , Heung-Il Suk

This study introduces an integrated framework for predictive causal inference designed to overcome limitations inherent in conventional single model approaches. Specifically, we combine a Hidden Markov Model (HMM) for spatial health state…

统计方法学 · 统计学 2025-10-31 Byunghee Lee , Hye Yeon Sin , Joonsung Kang

Literature on machine learning for multiple sclerosis has primarily focused on the use of neuroimaging data such as magnetic resonance imaging and clinical laboratory tests for disease identification. However, studies have shown that these…

In regression models, predictor variables with inherent ordering, such as tumor staging ranging and ECOG performance status, are commonly seen in medical settings. Statistically, it may be difficult to determine the functional form of an…

统计方法学 · 统计学 2020-08-04 Emily Roberts , Lili Zhao

Motivated by recent findings that within-subject (WS) visit-to-visit variabilities of longitudinal biomarkers can be strong risk factors for health outcomes, this paper introduces and examines a new joint model of a longitudinal biomarker…

统计方法学 · 统计学 2023-05-08 Shanpeng Li , Daniel S. Nuyujukian , Robyn L. McClelland , Peter D. Reaven , Jin Zhou , Hua Zhou , Gang Li

In the advent of democratized usage of large language models (LLMs), there is a growing desire to systematize LLM prompt creation and selection processes beyond iterative trial-and-error. Prior works majorly focus on searching the space of…

计算与语言 · 计算机科学 2024-08-28 Michael Feffer , Ronald Xu , Yuekai Sun , Mikhail Yurochkin

Mixtures of Mallows models are a popular generative model for ranking data coming from a heterogeneous population. They have a variety of applications including social choice, recommendation systems and natural language processing. Here we…

数据结构与算法 · 计算机科学 2018-08-20 Allen Liu , Ankur Moitra

We consider the estimation of Dirichlet Process Mixture Models (DPMMs) in distributed environments, where data are distributed across multiple computing nodes. A key advantage of Bayesian nonparametric models such as DPMMs is that they…

机器学习 · 统计学 2017-09-20 Ruohui Wang , Dahua Lin

Knowledge stored in large language models requires timely updates to reflect the dynamic nature of real-world information. To update the knowledge, most knowledge editing methods focus on the low layers, since recent probes into the…

计算与语言 · 计算机科学 2024-12-25 Wenhang Shi , Yiren Chen , Shuqing Bian , Xinyi Zhang , Zhe Zhao , Pengfei Hu , Wei Lu , Xiaoyong Du

Disease progression models are widely used to inform the diagnosis and treatment of many progressive diseases. However, a significant limitation of existing models is that they do not account for health disparities that can bias the…

机器学习 · 计算机科学 2025-05-01 Erica Chiang , Divya Shanmugam , Ashley N. Beecy , Gabriel Sayer , Deborah Estrin , Nikhil Garg , Emma Pierson