Invited by Prof. Yumei Huang of School of Mathematics and Statistics, Prof. Tieyong Zeng from the Chinese University of Hong Kong give a lecture.

Title: The Artificial Trust Region Method for Image Recovery

Time: 8:30 a.m.,May.9th, 2021

Location: Room 631 ,the College Student Activity Center

Abstract: In mathematical optimization, a trust region is the subset of the region of the objective function that is approximated using a model function (often a quadratic). If an adequate model of the objective function is found within the trust region, then the region is expanded; conversely, if the approximation is poor, then the region is contracted. Trust-region methods are also known as restricted-step methods. In this talk, we illustrate how to use a fixed trust region method for image recovery.