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Data augmentation is an important technique in training deep neural networks as it enhances their ability to generalize and remain robust. While data augmentation is commonly used to expand the sample size and act as a consistency…

机器学习 · 计算机科学 2025-02-18 Xiliang Yang , Shenyang Deng , Shicong Liu , Yuanchi Suo , Wing. W. Y NG , Jianjun Zhang

Dimensional analysis (DA) pays attention to fundamental physical dimensions such as length and mass when modelling scientific and engineering systems. It goes back at least a century to Buckingham's Pi theorem, which characterizes a…

机器学习 · 计算机科学 2023-12-19 G. Alexi Rodriguez-Arelis , William J. Welch

In recent years, machine learning (ML) has been proposed to devise data-driven parametrisations of unresolved processes in dynamical numerical models. In most cases, the ML training leverages high-resolution simulations to provide a dense,…

计算物理 · 物理学 2020-12-09 Julien Brajard , Alberto Carrassi , Marc Bocquet , Laurent Bertino

The clinical deployment of deep learning models for high-stakes tasks such as diabetic retinopathy (DR) grading requires demonstrable reliability. While models achieve high accuracy, their clinical utility is limited by a lack of robust…

计算机视觉与模式识别 · 计算机科学 2025-08-21 Rizwan Ahamed , Annahita Amireskandari , Joel Palko , Carol Laxson , Binod Bhattarai , Prashnna Gyawali

Statistical approaches that successfully combine multiple datasets are more powerful, efficient, and scientifically informative than separate analyses. To address variation architectures correctly and comprehensively for high-dimensional…

统计方法学 · 统计学 2023-09-01 Jiuzhou Wang , Eric F. Lock

In this paper, we propose a new decomposition approach named the proximal primal dual algorithm (Prox-PDA) for smooth nonconvex linearly constrained optimization problems. The proposed approach is primal-dual based, where the primal step…

最优化与控制 · 数学 2016-04-05 Mingyi Hong

The diffusion approximation (DA) is widely used in the analysis of stochastic population dynamics, from population genetics to ecology and evolution. DA is an uncontrolled approximation that assumes the smoothness of the calculated quantity…

种群与进化 · 定量生物学 2021-01-04 Jayant Pande , Nadav M. Shnerb

Data augmentation (DA) is crucial to mitigate model training instability and over-fitting problems in low-resource open-domain dialogue generation. However, traditional DA methods often neglect semantic data diversity, restricting the…

计算与语言 · 计算机科学 2024-04-02 Zhenhua Liu , Tong Zhu , Jianxiang Xiang , Wenliang Chen

Domain alignment (DA) has been widely used in unsupervised domain adaptation. Many existing DA methods assume that a low source risk, together with the alignment of distributions of source and target, means a low target risk. In this paper,…

机器学习 · 计算机科学 2020-06-12 Yueming Yin , Zhen Yang , Haifeng Hu , Xiaofu Wu

It is well known in many settings that reversible Langevin diffusions in confining potentials converge to equilibrium exponentially fast. Adding irreversible perturbations to the drift of a Langevin diffusion that maintain the same…

统计方法学 · 统计学 2019-07-02 Michela Ottobre , Natesh S. Pillai , Konstantinos Spiliopoulos

Non-concave maximization has been the subject of much recent study in the optimization and machine learning communities, specifically in deep learning. Recent papers Ge et al, Lee et al (and references therein) indicate that first order…

最优化与控制 · 数学 2020-01-14 Ioannis Panageas , Georgios Piliouras , Xiao Wang

This paper describes a data reduction technique in case of a markov chain of specified order. Instead of observing all the transitions in a markov chain we record only a few of them and treat the remaining part as missing. The decision…

统计方法学 · 统计学 2018-07-17 Atanu Kumar Ghosh , Arnab Chakraborty

This study explores the classification error of Mixture Discriminant Analysis (MDA) in scenarios where the number of mixture components exceeds those present in the actual data distribution, a condition known as overspecification. We use a…

High-fidelity full-field micro-mechanical modeling of the non-linear path-dependent materials demands a substantial computational effort. Recent trends in the field incorporates data-driven Artificial Neural Networks (ANNs) as surrogate…

材料科学 · 物理学 2023-11-27 Hon Lam Cheung , Petter Uvdal , Mohsen Mirkhalaf

The standard Gibbs sampler of Mixed Multinomial Logit (MMNL) models involves sampling from conditional densities of utility parameters using Metropolis-Hastings (MH) algorithm due to unavailability of conjugate prior for logit kernel. To…

机器学习 · 统计学 2019-04-17 Prateek Bansal , Rico Krueger , Michel Bierlaire , Ricardo A. Daziano , Taha H. Rashidi

The excellent performance of deep neural networks is usually accompanied by a large number of parameters and computations, which have limited their usage on the resource-limited edge devices. To address this issue, abundant methods such as…

计算机视觉与模式识别 · 计算机科学 2023-05-23 Muzhou Yu , Linfeng Zhang , Kaisheng Ma

Effective Prognostics and Health Management (PHM) relies on accurate prediction of the Remaining Useful Life (RUL). Data-driven RUL prediction techniques rely heavily on the representativeness of the available time-to-failure trajectories.…

人工智能 · 计算机科学 2023-10-16 Ismail Nejjar , Fabian Geissmann , Mengjie Zhao , Cees Taal , Olga Fink

Data augmentation has been widely used to improve deep neural networks in many research fields, such as computer vision. However, less work has been done in the context of text, partially due to its discrete nature and the complexity of…

计算与语言 · 计算机科学 2021-01-12 Ping Yu , Ruiyi Zhang , Yang Zhao , Yizhe Zhang , Chunyuan Li , Changyou Chen

Pseudo-marginal Metropolis-Hastings (pmMH) is a powerful method for Bayesian inference in models where the posterior distribution is analytical intractable or computationally costly to evaluate directly. It operates by introducing…

统计计算 · 统计学 2016-08-06 Johan Dahlin , Fredrik Lindsten , Joel Kronander , Thomas B. Schön

Data augmentation is a promising technique for unsupervised anomaly detection in industrial applications, where the availability of positive samples is often limited due to factors such as commercial competition and sample collection…

计算机视觉与模式识别 · 计算机科学 2023-04-25 Lingrui Zhang , Shuheng Zhang , Guoyang Xie , Jiaqi Liu , Hua Yan , Jinbao Wang , Feng Zheng , Yaochu Jin
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