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Bayesian deep learning offers a principled way to address many issues concerning safety of artificial intelligence (AI), such as model uncertainty,model interpretability, and prediction bias. However, due to the lack of efficient Monte…

机器学习 · 统计学 2020-09-22 Sehwan Kim , Qifan Song , Faming Liang

Reinforcement learning (RL) tackles sequential decision-making problems by creating agents that interacts with their environment. However, existing algorithms often view these problem as static, focusing on point estimates for model…

机器学习 · 统计学 2024-03-21 Frank Shih , Faming Liang

We consider distributed optimization under communication constraints for training deep learning models. We propose a new algorithm, whose parameter updates rely on two forces: a regular gradient step, and a corrective direction dictated by…

机器学习 · 计算机科学 2022-04-29 Yunfei Teng , Wenbo Gao , Francois Chalus , Anna Choromanska , Donald Goldfarb , Adrian Weller

We introduce a new approach to prediction in graphical models with latent-shift adaptation, i.e., where source and target environments differ in the distribution of an unobserved confounding latent variable. Previous work has shown that as…

机器学习 · 统计学 2023-06-26 William I. Walker , Arthur Gretton , Maneesh Sahani

In this paper, we address the challenge of Perspective-Invariant Learning in machine learning and computer vision, which involves enabling a network to understand images from varying perspectives to achieve consistent semantic…

计算机视觉与模式识别 · 计算机科学 2024-06-18 Deyi Ji , Feng Zhao , Lanyun Zhu , Wenwei Jin , Hongtao Lu , Jieping Ye

We consider the problem of efficiently approximating and encoding high-dimensional data sampled from a probability distribution $\rho$ in $\mathbb{R}^D$, that is nearly supported on a $d$-dimensional set $\mathcal{M}$ - for example…

机器学习 · 统计学 2017-07-19 Wenjing Liao , Mauro Maggioni

The knowledge of end-to-end network distances is essential to many Internet applications. As active probing of all pairwise distances is infeasible in large-scale networks, a natural idea is to measure a few pairs and to predict the other…

网络与互联网体系结构 · 计算机科学 2016-11-15 Yongjun Liao , Wei Du , Pierre Geurts , Guy Leduc

In this letter, we address the problem of millimeter-Wave channel estimation in massive MIMO communication systems. Leveraging the sparsity of the mmWave channel in the beamspace, we formulate the estimation problem as a sparse signal…

信号处理 · 电气工程与系统科学 2023-03-07 Peicong Zheng , Xuantao Lyu , Yi Gong

Symmetric positive definite (SPD) matrix has been demonstrated to be an effective feature descriptor in many scientific areas, as it can encode spatiotemporal statistics of the data adequately on a curved Riemannian manifold, i.e., SPD…

计算机视觉与模式识别 · 计算机科学 2023-11-29 Rui Wang , Xiao-Jun Wu , Hui Li , Josef Kittler

Extracting meaningful information from high-dimensional data poses a formidable modeling challenge, particularly when the data is obscured by noise or represented through different modalities. This research proposes a novel non-parametric…

机器学习 · 计算机科学 2024-08-27 Navid Ziaei , Behzad Nazari , Uri T. Eden , Alik Widge , Ali Yousefi

Large language models (LLMs) have achieved remarkable performance across a wide range of NLP tasks. However, their substantial inference cost poses a major barrier to real-world deployment, especially in latency-sensitive scenarios. To…

计算与语言 · 计算机科学 2025-05-26 Ning Yang , Fangxin Liu , Junjie Wang , Tao Yang , Kan Liu , Haibing Guan , Li Jiang

Alternating Direction Method of Multipliers (ADMM) has been used successfully in many conventional machine learning applications and is considered to be a useful alternative to Stochastic Gradient Descent (SGD) as a deep learning optimizer.…

最优化与控制 · 数学 2021-07-07 Junxiang Wang , Fuxun Yu , Xiang Chen , Liang Zhao

We investigate a generalized framework to estimate a latent low-rank plus sparse tensor, where the low-rank tensor often captures the multi-way principal components and the sparse tensor accounts for potential model mis-specifications or…

统计方法学 · 统计学 2022-04-15 Jian-Feng Cai , Jingyang Li , Dong Xia

Deep learning is a hierarchical inference method formed by subsequent multiple layers of learning able to more efficiently describe complex relationships. In this work, Deep Gaussian Mixture Models are introduced and discussed. A Deep…

机器学习 · 统计学 2017-11-21 Cinzia Viroli , Geoffrey J. McLachlan

Dynamic mode decomposition (DMD) is a widely used data-driven algorithm for predicting the future states of dynamical systems. However, its standard formulation often struggles with poor long-term predictive accuracy. To address this…

数值分析 · 数学 2026-04-21 Qiuqi Li , Chang Liu , Yifei Yang

It is known that gradient-based MCMC samplers for continuous spaces, such as Langevin Monte Carlo (LMC), can be derived as particle versions of a gradient flow that minimizes KL divergence on a Wasserstein manifold. The superior efficiency…

机器学习 · 计算机科学 2023-02-24 Haoran Sun , Hanjun Dai , Bo Dai , Haomin Zhou , Dale Schuurmans

Explaining the generalization characteristics of deep learning is an emerging topic in advanced machine learning. There are several unanswered questions about how learning under stochastic optimization really works and why certain…

机器学习 · 计算机科学 2022-04-01 Mahdi S. Hosseini , Mathieu Tuli , Konstantinos N. Plataniotis

Although deep neural networks have demonstrated significant success due to their powerful expressiveness, most models struggle to meet practical requirements for uncertainty estimation. Concurrently, the entangled nature of deep neural…

机器学习 · 计算机科学 2025-05-29 Xinyue Hu , Zhibin Duan , Bo Chen , Mingyuan Zhou

A text mining approach is proposed based on latent Dirichlet allocation (LDA) to analyze the Consumer Financial Protection Bureau (CFPB) consumer complaints. The proposed approach aims to extract latent topics in the CFPB complaint…

信息检索 · 计算机科学 2018-07-20 Kaveh Bastani , Hamed Namavari , Jeffry Shaffer

We propose an adaptively weighted stochastic gradient Langevin dynamics algorithm (SGLD), so-called contour stochastic gradient Langevin dynamics (CSGLD), for Bayesian learning in big data statistics. The proposed algorithm is essentially a…

机器学习 · 统计学 2022-05-24 Wei Deng , Guang Lin , Faming Liang