报告时间：2022年11月10日 早上10：00 开始
报告地点：包玉书9号楼113报告厅
报告题目：t-Product Factorization Optimization Method for Internet Traffic Data Recovery
报 告 人：凌晨 教授 (杭州电子科技大学)
报告摘要：Recovery of network traffic data from incomplete observed data is an important issue in internet engineering and management. In this talk, by fully combining the temporal stability and periodicity features in internet traffic data, a new separable optimization model for internet data recovery is proposed, which is based upon the t-product factorization and the rapid discrete Fourier transform of tensors. The separable structural features presented in the model provide the possibility to design more efficient parallel algorithms. Moreover, by using generalized inverse matrices, an easy-to-operate and effective algorithm is proposed. In theory, we prove that under suitable conditions, every accumulation point of the sequence generated by the proposed algorithm is a stationary point of the established model. Numerical simulation results carried on the widely used real-world internet network datasets, show that the proposed method outperforms state-of-the-art competitions.
报告人信息：杭州电子科技大学理学院教授，博士生导师。现任中国运筹学会数学规划分会副理事长、中国经济数学与管理数学研究会副理事长，曾任中国运筹学会理事、中国系统工程学会理事、浙江省数学会常务理事。近十年来，主持国家自科基金和浙江省自科基金各4项、其中省基金重点项目1项。在国内外重要刊物发表论文80余篇，多篇发表在Math. Program.、SIAM J. Optim.和 SIAM J.Matrix Anal.and Appl.、COAP、JOTA、JOGO等。
