报告专家：梁经纬 副教授（上海交通大学 自然科学研究院）

报告题目：On the Acceleration of First-order Methods and a New One

报告地点：会议号：452127112（腾讯会议）

报告时间：6月8日下午2:00

报告简介： Over the past decades, driven by the success of the Heavy-ball method, Nesterov's acceleration and FISTA scheme, inertial technique has become one of the most popular approaches for accelerating optimization methods. However, the performance of other inertial "accelerated" first-order methods, such as inertial Douglas--Rachford, is not as good as the aforementioned ones, or even results in deacceleration. In this talk, I will first discuss the limitations of inertial technique, particular its failures. Then I will present a geometry inspired acceleration scheme. Both relation with existing work and numerical experiments will be covered. This is a joint work with Clarice Poon.

专家个人简介：梁经纬于2013年获得上海交通大学数学硕士学位，之后于2016年获得法国卡昂大学数学博士学位。2017至2020年，梁经纬在英国剑桥大学理论物理与应用数学系从事博士后研究工作，并于2020年底加入伦敦玛丽王后大学数学科学学院任数据科学讲师。2021年7月，正式加入上海交通大学。梁经纬的主要研究兴趣为数学图像处理，非光滑优化和数据科学等。