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检索条件"机构=State Key Laboratory of Scientific&Engineering Computing"
418 条 记 录,以下是91-100 订阅
排序:
Symplectic Stiefel manifold: tractable metrics, second-order geometry and Newton’s methods
arXiv
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arXiv 2024年
作者: Gao, Bin Son, Nguyen Thanh Stykel, Tatjana State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing100190 China Department of Mathematics and Informatics Thai Nguyen University of Sciences Thai Nguyen24118 Viet Nam Universität Augsburg Universitätsstraße 12a Augsburg86159 Germany
Optimization under the symplecticity constraint is an approach for solving various problems in quantum physics and scientific computing. Building on the results that this optimization problem can be transformed into a... 详细信息
来源: 评论
Phase-field modeling of dendritic growth with gas bubbles in the solidification of binary alloys
arXiv
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arXiv 2024年
作者: Zhan, Chengjie Chai, Zhenhua Sun, Dongke Shi, Baochang Geng, Shaoning Jiang, Ping School of Mathematics and Statistics Huazhong University of Science and Technology Wuhan430074 China Institute of Interdisciplinary Research for Mathematics and Applied Science Huazhong University of Science and Technology Wuhan430074 China Hubei Key Laboratory of Engineering Modeling and Scientific Computing Huazhong University of Science and Technology Wuhan430074 China School of Mechanical Engineering Southeast University Nanjing211189 China The State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan430074 China
In this work, a phase-field model is developed for the dendritic growth with gas bubbles in the solidification of binary alloys. In this model, a total free energy for the complex gas-liquid-dendrite system is propose... 详细信息
来源: 评论
Learning-rate-free Momentum SGD with Reshuffling Converges in Nonsmooth Nonconvex Optimization
arXiv
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arXiv 2024年
作者: Hu, Xiaoyin Xiao, Nachuan Liu, Xin Toh, Kim-Chuan School of Computer and Computing Science Hangzhou City University Hangzhou310015 China Institute of Operational Research and Analytics National University of Singapore Singapore State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences University of Chinese Academy of Sciences China Department of Mathematics Institute of Operations Research and Analytics National University of Singapore Singapore119076 Singapore
In this paper, we propose a generalized framework for developing learning-rate-free momentum stochastic gradient descent (SGD) methods in the minimization of nonsmooth nonconvex functions, especially in training nonsm... 详细信息
来源: 评论
Proximal Subgradient Norm Minimization of Ista and Fista
SSRN
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SSRN 2022年
作者: Li, Bowen Shi, Bin Yuan, Ya-Xiang State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing Beijing100190 China University of Chinese Academy of Sciences Beijing Beijing100049 China
For first-order smooth optimization, the research on the acceleration phenomenon has a long-time history. Until recently, the mechanism leading to acceleration was not successfully uncovered by the gradient correction... 详细信息
来源: 评论
On the Hyperparameters in Stochastic Gradient Descent with Momentum
arXiv
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arXiv 2021年
作者: Shi, Bin State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing China
Following the same routine as [SSJ20], we continue to present the theoretical analysis for stochastic gradient descent with momentum (SGD with momentum) in this paper. Differently, for SGD with momentum, we demonstrat... 详细信息
来源: 评论
The Sampling Method for Optimal Precursors of ENSO Events
arXiv
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arXiv 2023年
作者: Shi, Bin Ma, Junjie State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing100190 China School of Mathematical Sciences University of Chinese Academy of Sciences Beijing100049 China School of Mathematics North University of China Taiyuan030051 China
El Niño-Southern Oscillation (ENSO) is one of the significant climate phenomena, which appears periodically in the tropic Pacific. The intermediate coupled ocean-atmosphere Zebiak-Cane (ZC) model is the first and... 详细信息
来源: 评论
Joint design of hybrid beamforming and reflection coefficients in RIS-aided mmWave MIMO systems
arXiv
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arXiv 2022年
作者: Li, Renwang Guo, Bei Tao, Meixia Liu, Ya-Feng Yu, Wei Department of Electronic Engineering Shanghai Jiao Tong University Shanghai China State Key Laboratory of Scientific and Engineering Computing Institute of Computational Mathematics and Scientific/Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing100190 China Department of Electrical and Engineering University of Toronto TorontoONM5S 3G4 Canada
This paper considers a reconfigurable intelligent surface (RIS)-aided millimeter wave (mmWave) downlink communication system where hybrid analog-digital beamforming is employed at the base station (BS). We formulate a... 详细信息
来源: 评论
An Inexact Preconditioned Zeroth-order Proximal Method for Composite Optimization
arXiv
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arXiv 2024年
作者: Liu, Shanglin Wang, Lei Xiao, Nachuan Liu, Xin State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing100190 China School of Mathematical Sciences University of Chinese Academy of Sciences Beijing101408 China Department of Statistics Pennsylvania State University University Park16802 United States Institute of Operational Research and Analytics National University of Singapore Singapore117597 Singapore
In this paper, we consider the composite optimization problem, where the objective function integrates a continuously differentiable loss function with a nonsmooth regularization term. Moreover, only the function valu... 详细信息
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Preface-Special Issue on Mathematical Optimization:Past,Present and Future
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Journal of the Operations Research Society of China 2020年 第2期8卷 197-198页
作者: Zai-Wen Wen Ya-Xiang Yuan Beijing International Center for Mathematical Research Peking UniversityBeijing 100871China State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China
Mathematical optimization is one of the foundations of fields such as operations research,computational mathematics,scientific and engineering computing,machine learning,and data *** tasks usually include formulating ... 详细信息
来源: 评论
Stochastic Gauss-Newton Algorithms for Online PCA
arXiv
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arXiv 2022年
作者: Zhou, Siyun Liu, Xin Xu, Liwei School of Mathematical Sciences University of Electronic Science and Technology of China China State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of Sciences University of Chinese Academy of Sciences China
In this paper, we propose a stochastic Gauss-Newton (SGN) algorithm to study the online principal component analysis (OPCA) problem, which is formulated by using the symmetric low-rank product (SLRP) model for dominan... 详细信息
来源: 评论