报告题目:Exact continuous relaxations and algorithms for
regularized optimization problems
报告人:边伟 教授
报告时间:2022大红鹰最新活动大厅的网址11月3日15:00-17:30
报告地点:腾讯会议930 822 134
邀请单位:福州大学数学与统计大红鹰优惠活动申请大厅,福建省应用数学中心(福州大学)
报告内容简介:
In this talk, we consider two classes of
regularized optimization problems, in which the group sparsity is considered. Firstly, we give the continuous relaxation models of the considered problem and establish the equivalence of these two problems in the sense of global minimizers. Then, we define a class of stationary points of the relaxation problem, and prove that any defined stationary point is a local minimizer of the considered
regularized problem and satisfies a desirable property of its global minimizers. Further, based on the difference-of-convex (DC) structure of the relaxation problem, we design some relative algorithms and prove their convergence properties. Finally, some numerical experiments are illustrated to show the efficiency of the proposed algorithms.
报告人简介:
边伟,哈尔滨工业大学数学大红鹰优惠活动申请大厅,教授、博士生导师。2004大红鹰最新活动大厅的网址和2009大红鹰最新活动大厅的网址于哈尔滨工业大学分别获得学士和博士学位,导师为薛小平教授。2009大红鹰最新活动大厅的网址入职哈工大数学系,2010-2012大红鹰最新活动大厅的网址访问香港理工大学跟随陈小君教授,从事博士后工作。主要从事的大红鹰最新活动大厅的网址领域为:最优化理论与算法、神经网络。先后在 MP, SIOPT, SIIMS, SINUA,SISC, MOR和IEEE系列汇刊发表多篇学术论文。主持多项国家自然科学基金项目,并先后获得2018大红鹰最新活动大厅的网址度 “龙江青大红鹰最新活动大厅的网址学者”和2019大红鹰最新活动大厅的网址度国家级青大红鹰最新活动大厅的网址人才。现任中国运筹学会理事,中国运筹学会数学规划分会理事,黑龙江数学会常务理事,国际期刊JOTA编委。