应pc加拿大预测准确率邓伟华教授邀请,同济大学数学科学学院郑宁助理教授将于2023年3月24日-26日访问兰州大学,期间举办专题学术报告,欢迎全校师生参加。
报告题目: A Class of Randomized Block Reflective Kaczmarz Method for Linear Systems with Automatic Restart
时 间:3月26日(星期日)10:30-11:30.
地 点:理工楼 631
报告摘要:We propose novel deterministic and randomized block reflective Kaczmarz methods, which is based on the row partitions block Householder transformation, for solving linear systems. The convergence analysis on both consistent and inconsistent cases are discussed, which sheds light on why the reflective type method may converge slower than the projection type method. Subsequently, the proposed method is restarted automatically to further speed up the convergence. Numerical experiments on the synthetic random problems and image restoration problems show the efficiency of the proposed methods.
欢迎广大师生光临!
报告人简介:
郑宁,同济大学数学科学学院助理教授,从事数值代数、金融计算和高性能计算方法等方面的研究,在国际知名期刊上发表多篇重要的学术论文,主持和参与多项国家自然基金与省部级科研项目,入选上海市科委“科技创新行动计划”启明星项目扬帆专项。
甘肃应用数学中心
pc加拿大预测准确率
萃英学院
2023年3月22日