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Gaussian processes (GPs) are powerful but computationally expensive machine learning models, requiring an estimate of the kernel covariance matrix for every prediction. In large and complex domains, such as graphs, sets, or images, the…

机器学习 · 计算机科学 2022-04-22 Alessandro Tibo , Thomas Dyhre Nielsen

We adapt Gaussian processes for estimating the average dose-response function in observational settings, introducing a powerful complement to treatment effect estimation for understanding heterogeneous effects. We incorporate samples from a…

统计理论 · 数学 2024-09-26 Jake R. Dailey

Image segmentation relies heavily on neural networks which are known to be overconfident, especially when making predictions on out-of-distribution (OOD) images. This is a common scenario in the medical domain due to variations in…

计算机视觉与模式识别 · 计算机科学 2024-07-24 Kilian Zepf , Selma Wanna , Marco Miani , Juston Moore , Jes Frellsen , Søren Hauberg , Frederik Warburg , Aasa Feragen

In this paper, we present a novel method to automatically classify medical images that learns and leverages weak causal signals in the image. Our framework consists of a convolutional neural network backbone and a causality-extractor module…

计算机视觉与模式识别 · 计算机科学 2023-09-20 Gianluca Carloni , Eva Pachetti , Sara Colantonio

The partially observable generalized linear model (POGLM) is a powerful tool for understanding neural connectivity under the assumption of existing hidden neurons. With spike trains only recorded from visible neurons, existing works use…

机器学习 · 计算机科学 2024-02-08 Chengrui Li , Weihan Li , Yule Wang , Anqi Wu

The generalised linear model (GLM) is a very important tool for analysing real data in biology, sociology, agriculture, engineering and many other application domain where the relationship between the response and explanatory variables may…

统计方法学 · 统计学 2016-07-04 Abhik Ghosh , Ayanendranath Basu

Gaussian graphical models are of great interest in statistical learning. Because the conditional independencies between different nodes correspond to zero entries in the inverse covariance matrix of the Gaussian distribution, one can learn…

机器学习 · 计算机科学 2010-11-02 Katya Scheinberg , Shiqian Ma , Donald Goldfarb

Assume that we observe a sample of size n composed of p-dimensional signals, each signal having independent entries drawn from a scaled Poisson distribution with an unknown intensity. We are interested in estimating the sum of the n unknown…

统计理论 · 数学 2018-01-19 Olivier Collier , Arnak Dalalyan

Elliptic Partial Differential Equations (PDEs) play a central role in computing the equilibrium conditions of physical problems (heat, gravitation, electrostatics, etc.). Efficient solutions to elliptic PDEs are also relevant to computer…

图形学 · 计算机科学 2026-02-13 Zhiyuan Zhang , Amir Vaxman , Stefanos-Aldo Papanicolopulos , Kartic Subr

In this work, we provide a non-asymptotic convergence analysis of projected gradient descent for physics-informed neural networks for the Poisson equation. Under suitable assumptions, we show that the optimization error can be bounded by…

最优化与控制 · 数学 2025-05-13 Jonas Nießen , Johannes Müller

Probability distributions produced by the cross-entropy loss for ordinal classification problems can possess undesired properties. We propose a straightforward technique to constrain discrete ordinal probability distributions to be unimodal…

机器学习 · 统计学 2017-06-23 Christopher Beckham , Christopher Pal

Checklists are simple decision aids that are often used to promote safety and reliability in clinical applications. In this paper, we present a method to learn checklists for clinical decision support. We represent predictive checklists as…

机器学习 · 计算机科学 2022-01-19 Haoran Zhang , Quaid Morris , Berk Ustun , Marzyeh Ghassemi

This paper focuses on the Bayesian Network Propensity Score (BNPS), a novel approach for estimating treatment effects in observational studies characterized by unknown (and likely unbalanced) designs and complex dependency structures among…

We develop a Bayesian Poisson matrix factorization model for forming recommendations from sparse user behavior data. These data are large user/item matrices where each user has provided feedback on only a small subset of items, either…

信息检索 · 计算机科学 2014-05-21 Prem Gopalan , Jake M. Hofman , David M. Blei

Prostate cancer diagnosis through MR imaging have currently relied on radiologists' interpretation, whilst modern AI-based methods have been developed to detect clinically significant cancers independent of radiologists. In this study, we…

图像与视频处理 · 电气工程与系统科学 2026-01-09 Xiangcen Wu , Yipei Wang , Qianye Yang , Natasha Thorley , Shonit Punwani , Veeru Kasivisvanathan , Ester Bonmati , Yipeng Hu

"AI for science" is widely recognized as a future trend in the development of scientific research. Currently, although machine learning algorithms have played a crucial role in scientific research with numerous successful cases, relatively…

软凝聚态物质 · 物理学 2024-07-11 Changliang Zhu , Chenchao Fang , Zhipeng Jin , Baowen Li , Xiangying Shen , Lei Xu

Gaussian Process Regression (GPR) is a Bayesian method for inferring profiles based on input data. The technique is increasing in popularity in the fusion community due to its many advantages over traditional fitting techniques including…

统计方法学 · 统计学 2022-09-07 Jarrod Leddy , Sandeep Madireddy , Eric Howell , Scott Kruger

We consider a graphical model where a multivariate normal vector is associated with each node of the underlying graph and estimate the graphical structure. We minimize a loss function obtained by regressing the vector at each node on those…

机器学习 · 统计学 2017-09-19 Xingqi Du , Subhashis Ghosal

To infer a multilayer representation of high-dimensional count vectors, we propose the Poisson gamma belief network (PGBN) that factorizes each of its layers into the product of a connection weight matrix and the nonnegative real hidden…

机器学习 · 统计学 2015-12-31 Mingyuan Zhou , Yulai Cong , Bo Chen

We continue studies of the uncertainty quantification problem in emission tomographies such as PET or SPECT when additional multimodal data (e.g., anatomical MRI images) are available. To solve the aforementioned problem we adapt the…

机器学习 · 统计学 2021-12-03 Fedor Goncharov , Éric Barat , Thomas Dautremer