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This paper proposes a new decentralized conjugate gradient (NDCG) method and a decentralized memoryless BFGS (DMBFGS) method for the nonconvex and strongly convex decentralized optimization problem, respectively, of minimizing a finite sum…

最优化与控制 · 数学 2025-01-20 Liping Wang , Hao Wu , Hongchao Zhang

With the explosive growth of data, continual learning capability is increasingly important for neural networks. Due to catastrophic forgetting, neural networks inevitably forget the knowledge of old tasks after learning new ones. In visual…

机器学习 · 计算机科学 2024-02-26 Shengyang Huang , Jianwen Mo

Multimodal learning has developed very fast in recent years. However, during the multimodal training process, the model tends to rely on only one modality based on which it could learn faster, thus leading to inadequate use of other…

机器学习 · 计算机科学 2024-11-05 Zirun Guo , Tao Jin , Jingyuan Chen , Zhou Zhao

We study a fully decentralized federated learning algorithm, which is a novel gradient descent algorithm executed on a communication-based network. For convenience, we refer to it as a network gradient descent (NGD) method. In the NGD…

机器学习 · 计算机科学 2022-05-18 Shuyuan Wu , Danyang Huang , Hansheng Wang

Like k-means and Gaussian Mixture Model (GMM), fuzzy c-means (FCM) with soft partition has also become a popular clustering algorithm and still is extensively studied. However, these algorithms and their variants still suffer from some…

机器学习 · 计算机科学 2020-04-28 Yunxia Lin , Songcan Chen

Continual learning (CL) presents a fundamental challenge in training neural networks on sequential tasks without experiencing catastrophic forgetting. Traditionally, the dominant approach in CL has been gradient-based optimization, where…

机器学习 · 计算机科学 2025-04-03 Grzegorz Rypeść

In this work, we present a federated version of the state-of-the-art Neural Collaborative Filtering (NCF) approach for item recommendations. The system, named FedNCF, enables learning without requiring users to disclose or transmit their…

信息检索 · 计算机科学 2022-02-17 Vasileios Perifanis , Pavlos S. Efraimidis

This paper proposes a fractional order gradient method for the backward propagation of convolutional neural networks. To overcome the problem that fractional order gradient method cannot converge to real extreme point, a simplified…

最优化与控制 · 数学 2020-01-07 Dian Sheng , Yiheng Wei , Yuquan Chen , Yong Wang

We devise deep nearest centroids (DNC), a conceptually elegant yet surprisingly effective network for large-scale visual recognition, by revisiting Nearest Centroids, one of the most classic and simple classifiers. Current deep models learn…

计算机视觉与模式识别 · 计算机科学 2023-03-15 Wenguan Wang , Cheng Han , Tianfei Zhou , Dongfang Liu

Fluidic injection provides a promising solution to improve the performance of overexpanded single expansion ramp nozzle (SERN) during vehicle acceleration. However, determining the injection parameters for the best overall performance under…

流体动力学 · 物理学 2024-09-20 Yunjia Yang , Jiazhe Li , Yufei Zhang , Haixin Chen

For nearly the past 30 years, Centroid Molecular Dynamics (CMD) has proven to be a viable classical-like phase space formulation for the calculation of quantum dynamical properties. However, calculation of the centroid effective force…

化学物理 · 物理学 2022-09-15 Timothy D. Loose , Patrick G. Sahrmann , Gregory A. Voth

Many real-world optimization problems contain parameters that are unknown before deployment time, either due to stochasticity or to lack of information (e.g., demand or travel times in delivery problems). A common strategy in such cases is…

We propose a novel trajectory-optimized Cluster-based Network Model (tCNM) for nonlinear model order reduction from time-resolved data following Li et al. ["Cluster-based network model, " J. Fluid Mech. 906, A21 (2021)] and improving the…

流体动力学 · 物理学 2022-08-24 Chang Hou , Nan Deng , Bernd R. Noack

In federated learning (FL), model training performance is strongly impacted by data heterogeneity across clients. Client-drift compensation methods have recently emerged as a solution to this issue, introducing correction terms into local…

机器学习 · 计算机科学 2025-05-20 Evan Chen , Shiqiang Wang , Jianing Zhang , Dong-Jun Han , Chaoyue Liu , Christopher Brinton

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 recent years, the node classification task in graph neural networks(GNNs) has developed rapidly, driving the development of research in various fields. However, there are a large number of class imbalances in the graph data, and there is…

机器学习 · 计算机科学 2022-10-13 Min Liu , Siwen Jin , Luo Jin , Shuohan Wang , Yu Fang , Yuliang Shi

Convolutional neural networks (CNNs) have constantly achieved better performance over years by introducing more complex topology, and enlarging the capacity towards deeper and wider CNNs. This makes the manual design of CNNs extremely…

计算机视觉与模式识别 · 计算机科学 2022-12-09 Bin Wang , Bing Xue , Mengjie Zhang

Filtering-based graph neural networks (GNNs) constitute a distinct class of GNNs that employ graph filters to handle graph-structured data, achieving notable success in various graph-related tasks. Conventional methods adopt a graph-wise…

机器学习 · 计算机科学 2025-05-23 Guoming Li , Jian Yang , Yifan Chen

Federated Learning (FL) enables privacy-preserving multi-source information fusion (MSIF) but is challenged by client drift in highly heterogeneous data settings. Many existing drift-mitigation strategies rely on reference-based…

机器学习 · 计算机科学 2026-02-12 Jungwon Seo , Ferhat Ozgur Catak , Chunming Rong , Kibeom Hong , Minhoe Kim

Convolutional neural networks (CNNs) have shown very appealing performance for many computer vision applications. The training of CNNs is generally performed using stochastic gradient descent (SGD) based optimization techniques. The…

计算机视觉与模式识别 · 计算机科学 2022-07-20 Sumanth Sadu , Shiv Ram Dubey , SR Sreeja