学术报告
报告题目:解相关线性方程组的加速随机Kaczmarz算法
报告人:董巧丽教授(中国民航大学)
负责人:谭兵老师,刘丽亚老师
报告时间:2024年9月25日(星期三)15:00-17:00
报告地点:#腾讯会议:457-874-553 (无密码)
参加人员:教师、研究生、本科生
报告摘要: By regarding the two-subspace Kaczmarz method as an alternated inertial randomized Kaczmarz algorithm, we present a better convergence rate estimate under a mild condition. Furthermore, we accelerate the alternated inertial randomized Kaczmarz algorithm and introduce a multi-step inertial randomized Kaczmarz algorithm which is proven to have a faster convergence rate. Numerical experiments support the theory results and illustrate that the multi-inertial randomized Kaczmarz algorithm significantly outperforms the two-subspace Kaczmarz method in solving coherent linear systems.
报告人简介: 董巧丽,中国民航大学教授,主要从事非线性分析、最优化理论及算法研究工作。 主持国家自然科学基金、天津市教委重点项目和航空科学基金,现任中国数学会计算数学分会理事,入选天津市“131”创新型人才培养工程二层次人选。