报告时间:2025年3月2日(星期日)15:00-17:00
报告地点:理学楼401
报告题目:A Landweber-type iteration with non-smooth convex constraints for ill-posed problems with noisy operators
报告摘要:In this paper, we develop a Landweber iteration with non-smooth constraints for solving ill-posed inverse problems with noisy operators. After analyzing the method under the discrepancy principle, which is of limited use in practice, we propose a purely data-driven heuristic parameter choice rule, i.e. the Hanke-Raus rule, to terminate the iteration. Under appropriate assumption conditions, we establish the convergence and regularity of the method with both stopping rules. Finally, numerical examples including parameter identification and CT image reconstruction are presented to illustrate the effectiveness of the proposed method.
报告人简介:王薇,博士,教授,硕士生导师。2019年入选嘉兴学院“青年勤慎学者”扶持计划。研究方向为反问题理论与计算,也包括地震波全波形反演、EIT问题、CT不完全数据的图像重构等应用。主持国家自然科学基金项目2项(青年基金项目、面上项目),浙江省自然科学基金项目2项(青年基金、一般项目),在Numer Math、Inverse Problems等有影响力的国际学术期刊上发表SCI论文20余篇。指导国家大学生创新项目1项(考核优秀),是数学建模竞赛指导老师,指导学生获省级一等奖和二等奖等多项。曾获校级优秀班主任,优秀教师等称号。