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Achieving high accuracy on data from domains unseen during training is a fundamental challenge in domain generalization (DG). While state-of-the-art DG classifiers have demonstrated impressive performance across various tasks, they have…

计算机视觉与模式识别 · 计算机科学 2023-07-18 Akshay Mehra , Yunbei Zhang , Bhavya Kailkhura , Jihun Hamm

Despite their success, convolutional neural networks are computationally expensive because they must examine all image locations. Stochastic attention-based models have been shown to improve computational efficiency at test time, but they…

机器学习 · 计算机科学 2015-09-24 Jimmy Ba , Roger Grosse , Ruslan Salakhutdinov , Brendan Frey

Bayesian neural networks (BNNs) require scalable sampling algorithms to approximate posterior distributions over parameters. Existing stochastic gradient Markov Chain Monte Carlo (SGMCMC) methods are highly sensitive to the choice of…

机器学习 · 计算机科学 2026-04-10 Rajit Rajpal , Benedict Leimkuhler , Yuanhao Jiang

Long Short-Term Memory (LSTM) Recurrent Neural networks (RNNs) rely on gating signals, each driven by a function of a weighted sum of at least 3 components: (i) one of an adaptive weight matrix multiplied by the incoming external input…

神经与进化计算 · 计算机科学 2019-01-01 Fathi M. Salem

Machine learning algorithms, such as Support Vector Machine (SVM) and Deep Neural Network (DNN), have gained a lot of interests recently. When training a machine learning algorithm, randomly shuffle all the training data can improve the…

性能 · 计算机科学 2018-10-11 Zhi-Lin Ke , Hsiang-Yun Cheng , Chia-Lin Yang

Latent state space systems are ubiquitous in statistical modelling, arising naturally when a time series is observed through a noisy measurement function, however training deep state space models (DSSM) at scale remains difficult. Two…

机器学习 · 计算机科学 2026-05-21 John-Joseph Brady , Nikolas Nusken , Yunpeng Li

Non-autoregressive text to speech (NAR-TTS) models have attracted much attention from both academia and industry due to their fast generation speed. One limitation of NAR-TTS models is that they ignore the correlation in time and frequency…

音频与语音处理 · 电气工程与系统科学 2022-03-01 Yi Ren , Xu Tan , Tao Qin , Zhou Zhao , Tie-Yan Liu

Mining tasks over sequential data, such as clickstreams and gene sequences, require a careful design of embeddings usable by learning algorithms. Recent research in feature learning has been extended to sequential data, where each instance…

机器学习 · 计算机科学 2020-07-28 Zhongfang Zhuang , Xiangnan Kong , Elke Rundensteiner , Jihane Zouaoui , Aditya Arora

We introduce neural particle smoothing, a sequential Monte Carlo method for sampling annotations of an input string from a given probability model. In contrast to conventional particle filtering algorithms, we train a proposal distribution…

计算与语言 · 计算机科学 2018-05-01 Chu-Cheng Lin , Jason Eisner

Unsupervised structure learning in high-dimensional time series data has attracted a lot of research interests. For example, segmenting and labelling high dimensional time series can be helpful in behavior understanding and medical…

机器学习 · 计算机科学 2017-05-25 Hao Liu , Haoli Bai , Lirong He , Zenglin Xu

The focus of this work is on spatial variable selection for scalar-on-image regression. We propose a new class of Bayesian nonparametric models, soft-thresholded Gaussian processes and develop the efficient posterior computation algorithms.…

统计方法学 · 统计学 2016-04-13 Jian Kang , Brian J. Reich , Ana-Maria Staicu

We propose Adaptive Randomized Smoothing (ARS) to certify the predictions of our test-time adaptive models against adversarial examples. ARS extends the analysis of randomized smoothing using $f$-Differential Privacy to certify the adaptive…

机器学习 · 计算机科学 2025-07-11 Saiyue Lyu , Shadab Shaikh , Frederick Shpilevskiy , Evan Shelhamer , Mathias Lécuyer

Hybrid methods have been shown to outperform pure statistical and pure deep learning methods at both forecasting tasks, and at quantifying the uncertainty associated with those forecasts (prediction intervals). One example is Multivariate…

机器学习 · 计算机科学 2022-02-28 Thabang Mathonsi , Terence L van Zyl

Use of appropriate initialization to warm-start Reynolds-averaged Navier-Stokes (RANS) simulations of turbulent flow can facilitate convergence and lead to efficient use of computational resources. In this work, a method to model downstream…

流体动力学 · 物理学 2025-01-27 Kazuko W. Fuchi , Eric M. Wolf , Christopher R. Schrock , Philip S. Beran

Models that employ latent variables to capture structure in observed data lie at the heart of many current unsupervised learning algorithms, but exact maximum-likelihood learning for powerful and flexible latent-variable models is almost…

机器学习 · 统计学 2020-08-18 Li K. Wenliang , Theodore Moskovitz , Heishiro Kanagawa , Maneesh Sahani

This study introduces a novel formulation to enhance Support Vector Machines (SVMs) in handling class imbalance and noise. Unlike the conventional Soft Margin SVM, which penalizes the magnitude of constraint violations, the proposed model…

机器学习 · 计算机科学 2025-03-20 Seyed Mojtaba Mohasel , Hamidreza Koosha

Variational autoencoders (VAEs) have been widely applied for text modeling. In practice, however, they are troubled by two challenges: information underrepresentation and posterior collapse. The former arises as only the last hidden state…

机器学习 · 计算机科学 2021-06-17 Xianghong Fang , Haoli Bai , Jian Li , Zenglin Xu , Michael Lyu , Irwin King

Incremental learning is a machine learning paradigm where a model learns from a sequential stream of tasks. This setting poses a key challenge: balancing plasticity (learning new tasks) and stability (preserving past knowledge). Neural…

机器学习 · 计算机科学 2025-07-29 Matteo Gambella , Manuel Roveri

The support vector machines (SVM) is one of the most widely used and practical optimization based classification models in machine learning because of its interpretability and flexibility to produce high quality results. However, the big…

机器学习 · 计算机科学 2020-11-06 Ehsan Sadrfaridpour , Korey Palmer , Ilya Safro

Automating sleep staging is vital to scale up sleep assessment and diagnosis to serve millions experiencing sleep deprivation and disorders and enable longitudinal sleep monitoring in home environments. Learning from raw polysomnography…

信号处理 · 电气工程与系统科学 2021-04-06 Huy Phan , Oliver Y. Chén , Minh C. Tran , Philipp Koch , Alfred Mertins , Maarten De Vos