154.com皇冠学术报告
Sketch-and-project methods for tensor linear systems
李寒宇
（重庆大学）
报告时间：2022年7月25日，星期一，上午10:00-11:00
报告地点：腾讯会议：198-966-984 会议密码：220725
报告摘要：For tensor linear systems with respect to the popular t-product, we first present the sketch-and-project method and its adaptive variants. Their Fourier domain versions are also investigated. Then, considering that the existing sketching tensor or way for sampling has some limitations, we propose two improved strategies. Convergence analyses for the methods mentioned above are provided. We compare our methods with the existing ones using synthetic and real data. Numerical results show that they have quite decent performance in terms of the number of iterations and running time.
报告人简介：李寒宇，博士、重庆大学教授、博士生导师，现任重庆工业与应用数学学会副理事长；主要研究方向为随机数值代数、统计计算、张量回归等；先后主持国家自然科学基金项目2项、重庆市自然科学基金项目2项，在国际知名杂志，如SIMAX, BIT, NLAA等发表学术论文多篇。
邀请人： 谢家新
