学术报告
喻高航
(杭州电子科技大学 教授)
报告时间:9:30-10:30,2021-5-13(星期四)
腾讯会议:512 135 097 密码:0513
报告地点:北航沙河校区主楼E402
报告题目:T-Singular Values and T-Sketching for Third Order Tensors
报告摘要:Based upon T-SVD (tensor SVD) of third order tensors, introduced by Kilmer and her collaborators, we define T-singular values of third order tensors. T-singular values of third order tensors are nonnegative scalars. The number of nonzero T-singular values is the tensor tubal rank of the given tensor. We then use T-singular values to define the tail energy of a third order tensor, and apply it to the error estimation of a tensor sketching algorithm for low rank tensor approximation. Numerical experiments on synthetic data and real world data show that our algorithm is efficient. We further present a T-sketching algorithm with power iteration, which give more accurate approximate solutions.
个人简介: 喻高航,杭州电子科技大学教授、博导,主要从事张量数据分析、大规模优化计算及其在机器学习、图像处理与医学影像中的应用研究。先后在SIAM Journal on Imaging Sciences, International Journal of Robust and Nonlinear Control,IEEE Signal Processing Letters,Journal of Mathematical Imaging and Vision等国际期刊上发表40余篇SCI论文,先后主持4项国家自然科学基金、1项教育部博士点基金、1项教育部新世纪优秀人才支持计划项目和1项浙江省自然科学基金重大项目,有多篇论文入选ESI高被引榜单。自2013年起任国际学术期刊Statistics, Optimization and Information Computing执行编委(Coordinating Editor)。
邀请人:崔春风