检索结果-南通市图书馆

A Modified Proximal Gradient Method for a Family of nonsmooth convex optimization Problems

Journal of the Operations Research Society of China 2017年第3期5卷 391-403页

作者： Ying-Yi Li Hai-Bin Zhang Fei Li College of Applied Sciences Beijing University of TechnologyBeijing 100124China

In this paper,we propose a modified proximal gradient method for solving a class of nonsmooth convex optimization problems,which arise in many contemporary statistical and signal processing *** proposed method adopts a new scheme to construct the descent direction based on the proximal gradient *** is proven that the modified proximal gradient method is Q-linearly convergent without the assumption of the strong convexity of the objective *** numerical experiments have been conducted to evaluate the proposed method eventually.

关键词： nonsmooth convex optimization Modified proximal gradient method Q-linear convergence

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nesterov’s Smoothing and Excessive Gap Methods for an optimization Problem in VLSI Placement

引用

Journal of the Operations Research Society of China 2014年第4期2卷 423-443页

作者： Jian-Li Chen Yan Cui Wen-Xing Zhu Center for Discrete Mathematics and Theoretical Computer Science Fuzhou UniversityFuzhou 350108China

In this paper,we propose an algorithm for a nonsmooth convex optimization problem arising in very large-scale integrated circuit *** objective function is the sum of a large number of Half-Perimeter Wire Length(HPWL)functions and a strongly convex *** algorithm is based on Nesterov’s smoothing and excessive gap *** main advantage of the algorithm is that it can capture the HPWL information in the process of optimization,and every subproblem has an explicit solution in the process of *** convergence rate of the algorithm is Oe1=k2T;where k is the iteration counter,which is *** also present preliminary experiments on nine placement contest *** examples confirm the theoretical results.

关键词： VLSI Global placement nonsmooth convex optimization Smoothing technique Excessive gap technique

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A note on a family of proximal gradient methods for quasi-static incremental problems in elastoplastic analysis

引用

Theoretical & Applied Mechanics Letters 2020年第5期10卷 315-320页

作者： Yoshihiro Kanno Mathematics and Informatics Center University of TokyoHongo 7-3-1Tokyo 113-8656Japan

Accelerated proximal gradient methods have recently been developed for solving quasi-static incremental problems of elastoplastic analysis with some different yield *** has been demonstrated through numerical experiments that these methods can outperform conventional optimization-based approaches in computational ***,in literature these algorithms are described individually for specific yield criteria,and hence there exists no guide for application of the algorithms to other yield *** short paper presents a general form of algorithm design,independent of specific forms of yield criteria,that unifies the existing proximal gradient *** interpretation is also given to each step of the presented general algorithm so that each update rule is linked to the underlying physical laws in terms of mechanical quantities.

关键词： Elastoplastic analysis Incremental problem nonsmooth convex optimization First-order optimization method Proximal gradient method

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：