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We present a new nonparametric mixture-of-experts model for multivariate regression problems, inspired by the probabilistic k-nearest neighbors algorithm. Using a conditionally specified model, predictions for out-of-sample inputs are based…

机器学习 · 统计学 2022-08-05 Tianfang Zhang , Rasmus Bokrantz , Jimmy Olsson

We develop Bayesian nonparametric models for spatially indexed data of mixed type. Our work is motivated by challenges that occur in environmental epidemiology, where the usual presence of several confounding variables that exhibit complex…

统计方法学 · 统计学 2014-10-17 Georgios Papageorgiou , Sylvia Richardson , Nicky Best

Bayesian graphical models have been shown to be a powerful tool for discovering uncertainty and causal structure from real-world data in many application fields. Current inference methods primarily follow different kinds of trade-offs…

机器学习 · 计算机科学 2018-02-20 Daniel Rugeles , Zhen Hai , Gao Cong , Manoranjan Dash

Bayesian hierarchical models are well-suited to analyzing the often noisy data from electroencephalography experiments in cognitive neuroscience: these models provide an intuitive framework to account for structures and correlations in the…

定量方法 · 定量生物学 2022-08-17 Davide Turco , Conor Houghton

Gaussian processes are Bayesian non-parametric models used in many areas. In this work, we propose a Non-stationary Heteroscedastic Gaussian process model which can be learned with gradient-based techniques. We demonstrate the…

机器学习 · 计算机科学 2022-12-26 Zeel B Patel , Nipun Batra , Kevin Murphy

Randomized clinical trials are considered the gold standard for estimating causal effects. Nevertheless, in studies that are aimed at examining adverse effects of interventions, such trials are often impractical because of ethical and…

统计方法学 · 统计学 2020-01-20 Anthony D. Scotina , Andrew R. Zullo , Robert J. Smith , Roee Gutman

High-order interaction events are common in real-world applications. Learning embeddings that encode the complex relationships of the participants from these events is of great importance in knowledge mining and predictive tasks. Despite…

机器学习 · 计算机科学 2022-07-11 Zheng Wang , Yiming Xu , Conor Tillinghast , Shibo Li , Akil Narayan , Shandian Zhe

A popular strategy for active learning is to specifically target a reduction in epistemic uncertainty, since aleatoric uncertainty is often considered as being intrinsic to the system of interest and therefore not reducible. Yet,…

统计方法学 · 统计学 2024-12-12 Jake Thomas , Jeremie Houssineau

The mean-field theory for two-layer neural networks considers infinitely wide networks that are linearly parameterized by a probability measure over the parameter space. This nonparametric perspective has significantly advanced both the…

机器学习 · 计算机科学 2025-08-08 Sinho Chewi , Philippe Rigollet , Yuling Yan

Mixed effect modeling for longitudinal data is challenging when the observed data are random objects, which are complex data taking values in a general metric space without linear structure. In such settings the classical additive error…

统计方法学 · 统计学 2023-07-13 Satarupa Bhattacharjee , Hans-Georg Müller

Leveraging multivariate spatial dependence to improve the precision of estimates using American Community Survey data and other sample survey data has been a topic of recent interest among data-users and federal statistical agencies. One…

应用统计 · 统计学 2024-01-19 Ryan Janicki , Andrew M. Raim , Scott H. Holan , Jerry Maples

Motivated by the need to study the molecular mechanism underlying Type 1 Diabetes (T1D) with the gene expression data collected from both the patients and healthy controls at multiple time points, we propose an innovative method for jointly…

统计方法学 · 统计学 2018-12-10 Bochao Jia , Faming Liang , the TEDDY Study Group

Recent work has shown that probabilistic models based on pairwise interactions-in the simplest case, the Ising model-provide surprisingly accurate descriptions of experiments on real biological networks ranging from neurons to genes.…

定量方法 · 定量生物学 2007-12-18 Tamara Broderick , Miroslav Dudik , Gasper Tkacik , Robert E. Schapire , William Bialek

Estimating treatment effects using observation data often relies on the assumption of no unmeasured confounders. However, unmeasured confounding variables may exist in many real-world problems. It can lead to a biased estimation without…

统计方法学 · 统计学 2024-11-19 Namhwa Lee , Shujie Ma

We consider a network scenario in which agents can evaluate each other according to a score graph that models some interactions. The goal is to design a distributed protocol, run by the agents, that allows them to learn their unknown state…

系统与控制 · 计算机科学 2018-06-05 Francesco Sasso , Angelo Coluccia , Giuseppe Notarstefano

Bayesian neural networks utilize probabilistic layers that capture uncertainty over weights and activations, and are trained using Bayesian inference. Since these probabilistic layers are designed to be drop-in replacement of their…

机器学习 · 计算机科学 2021-06-28 Daniel T. Chang

Graph-based collaborative filtering methods have prevailing performance for recommender systems since they can capture high-order information between users and items, in which the graphs are constructed from the observed user-item…

信息检索 · 计算机科学 2024-01-24 Hongjian Gu , Yaochen Hu , Yingxue Zhang

Facial emotion recognition is the task to classify human emotions in face images. It is a difficult task due to high aleatoric uncertainty and visual ambiguity. A large part of the literature aims to show progress by increasing accuracy on…

计算机视觉与模式识别 · 计算机科学 2020-08-18 Maryam Matin , Matias Valdenegro-Toro

This paper describes a heuristic Bayesian method for computing probability distributions from experimental data, based upon the multivariate normal form of the influence diagram. An example illustrates its use in medical technology…

人工智能 · 计算机科学 2013-04-11 Ross D. Shachter , David M. Eddy , Vic Hasselblad , Robert Wolpert

Correlations between anomalous activity patterns can yield pertinent information about complex social processes: a significant deviation from normal behavior, exhibited simultaneously by multiple pairs of actors, provides evidence for some…

人工智能 · 计算机科学 2013-11-19 Aaron Schein , Juston Moore , Hanna Wallach