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We propose a convenient matrix-free neural architecture for the multigrid method. The architecture is simple enough to be implemented in less than fifty lines of code, yet it encompasses a large number of distinct multigrid solvers. We…

数值分析 · 数学 2024-02-09 Vladimir Fanaskov

Deep neural networks trained end-to-end to map a measurement of a (noisy) image to a clean image perform excellent for a variety of linear inverse problems. Current methods are only trained on a few hundreds or thousands of images as…

图像与视频处理 · 电气工程与系统科学 2023-02-24 Tobit Klug , Reinhard Heckel

Motivated by extreme multi-label classification applications, we consider training deep learning models over sparse data in multi-GPU servers. The variance in the number of non-zero features across training batches and the intrinsic GPU…

分布式、并行与集群计算 · 计算机科学 2021-10-15 Yujing Ma , Florin Rusu , Kesheng Wu , Alexander Sim

Though deep learning methods have shown great success in 3D point cloud part segmentation, they generally rely on a large volume of labeled training data, which makes the model suffer from unsatisfied generalization abilities to unseen…

计算机视觉与模式识别 · 计算机科学 2021-10-12 Yu Hao , Yi Fang

Real-time video analytics systems typically deploy lightweight models on edge devices to reduce latency. However, the distribution of data features may change over time due to various factors such as changing lighting and weather…

计算机视觉与模式识别 · 计算机科学 2025-10-28 Runchu Donga , Peng Zhao , Guiqin Wang , Nan Qi , Jie Lin

Neural network optimization remains one of the most consequential yet poorly understood challenges in modern AI research, where improvements in training algorithms can lead to enhanced feature learning in foundation models,…

机器学习 · 计算机科学 2025-12-23 Ansh Nagwekar

This paper investigates multilevel initialization strategies for training very deep neural networks with a layer-parallel multigrid solver. The scheme is based on the continuous interpretation of the training problem as a problem of optimal…

机器学习 · 计算机科学 2019-12-20 Eric C. Cyr , Stefanie Günther , Jacob B. Schroder

This paper proposes a mode multigrid (MMG) method, and applies it to accelerate the convergence of the steady state flow on unstructured grids. The dynamic mode decomposition (DMD) technique is used to analyze the convergence process of…

计算物理 · 物理学 2018-02-27 Yilang Liu , Weiwei Zhang , Jiaqing Kou

Training deep neural networks on large datasets can often be accelerated by using multiple compute nodes. This approach, known as distributed training, can utilize hundreds of computers via specialized message-passing protocols such as Ring…

机器学习 · 计算机科学 2022-01-12 Max Ryabinin , Eduard Gorbunov , Vsevolod Plokhotnyuk , Gennady Pekhimenko

The ability to train large-scale neural networks has resulted in state-of-the-art performance in many areas of computer vision. These results have largely come from computational break throughs of two forms: model parallelism, e.g. GPU…

计算机视觉与模式识别 · 计算机科学 2013-12-24 Thomas Paine , Hailin Jin , Jianchao Yang , Zhe Lin , Thomas Huang

There has been huge progress on video action recognition in recent years. However, many works focus on tweaking existing 2D backbones due to the reliance of ImageNet pretraining, which restrains the models from achieving higher efficiency…

计算机视觉与模式识别 · 计算机科学 2025-03-05 Zhe Wang , Xulei Yang

Real-world datasets are often highly class-imbalanced, which can adversely impact the performance of deep learning models. The majority of research on training neural networks under class imbalance has focused on specialized loss functions,…

机器学习 · 计算机科学 2023-12-06 Ravid Shwartz-Ziv , Micah Goldblum , Yucen Lily Li , C. Bayan Bruss , Andrew Gordon Wilson

Low precision training is one of the most popular strategies for deploying the deep model on limited hardware resources. Fixed point implementation of DCNs has the potential to alleviate complexities and facilitate potential deployment on…

计算机视觉与模式识别 · 计算机科学 2019-12-30 Zehua Cheng , Weiyang Wang , Yan Pan , Thomas Lukasiewicz

Slow motion videos are becoming increasingly popular, but capturing high-resolution videos at extremely high frame rates requires professional high-speed cameras. To mitigate this problem, current techniques increase the frame rate of…

计算机视觉与模式识别 · 计算机科学 2020-04-22 Avinash Paliwal , Nima Khademi Kalantari

Large-batch SGD is important for scaling training of deep neural networks. However, without fine-tuning hyperparameter schedules, the generalization of the model may be hampered. We propose to use batch augmentation: replicating instances…

机器学习 · 计算机科学 2019-01-29 Elad Hoffer , Tal Ben-Nun , Itay Hubara , Niv Giladi , Torsten Hoefler , Daniel Soudry

Multi-view videos are becoming widely used in different fields, but their high resolution and multi-camera shooting raise significant challenges for storage and transmission. In this paper, we propose MV-MGINR, a multi-grid implicit neural…

图像与视频处理 · 电气工程与系统科学 2025-09-23 Qingyue Ling , Zhengxue Cheng , Donghui Feng , Shen Wang , Chen Zhu , Guo Lu , Heming Sun , Jiro Katto , Li Song

Large-batch training is an efficient approach for current distributed deep learning systems. It has enabled researchers to reduce the ImageNet/ResNet-50 training from 29 hours to around 1 minute. In this paper, we focus on studying the…

机器学习 · 计算机科学 2020-06-16 Yang You , Yuhui Wang , Huan Zhang , Zhao Zhang , James Demmel , Cho-Jui Hsieh

Medical imaging deep learning models are often large and complex, requiring specialized hardware to train and evaluate these models. To address such issues, we propose the PocketNet paradigm to reduce the size of deep learning models by…

图像与视频处理 · 电气工程与系统科学 2023-11-21 Adrian Celaya , Jonas A. Actor , Rajarajeswari Muthusivarajan , Evan Gates , Caroline Chung , Dawid Schellingerhout , Beatrice Riviere , David Fuentes

Existing studies of training state-of-the-art Contrastive Language-Image Pretraining (CLIP) models on large-scale data involve hundreds of or even thousands of GPUs due to the requirement of a large batch size. However, such a large amount…

机器学习 · 计算机科学 2024-10-03 Xiyuan Wei , Fanjiang Ye , Ori Yonay , Xingyu Chen , Baixi Sun , Dingwen Tao , Tianbao Yang

The objective of this paper is to design novel multi-layer neural network architectures for multiscale simulations of flows taking into account the observed data and physical modeling concepts. Our approaches use deep learning concepts…

数值分析 · 数学 2018-06-14 Yating Wang , Siu Wun Cheung , Eric T. Chung , Yalchin Efendiev , Min Wang