报告题目： |
A primal-dual fixed point algorithm for minimization of the sum of three convex separable functions |
报 告 人： |
黄建国 教授 上海交通大学 数学科学学院 |
报告时间： |
4月21日 星期五 下午 4:00-5:00 |
报告地点： |
数理学院(10号楼)222室 |
相关介绍： |
Many problems arising in image processing and signal recovery with multi -regularization and constraints can be formulated as minimization of a sum of three convex separable functions. Typically, the objective function involves a smooth function with Lipschitz continuous gradient, a linear composite non--smooth function and a non--smooth function. In this talk, we aim to propose a primal-dual fixed point (PDFP) scheme to solve the above class of problems. The proposed algorithm is a symmetric and fully splitting scheme, only involving explicit gradient, linear transform and the proximity operators which may have closed-form solution. The convergence of the algorithm is established and some numerical examples are performed to show its efficiency. This is a joint work with Peijun Chen and Xiaoqun Zhang from Shanghai Jiao Tong University. |