报告题目:A new S-lemma with two quadratic equalities and its applications
报告人:Ruey-Lin Sheu(许瑞麟)教授(台湾成功大学)
报告时间:2019年3月13日下午 5:00-6:00
报告地点:老主楼213
摘要:We present a new version of S-lemma with two quadratic equalities and show that it can be applied to solve many problems. The application include: (i) to check whether or not two quadratic surfaces $f(x)=0$ and $g(x)=0$can intersect with each other; (ii) to minimize the absolute value of a quadratic function over a quadratic constraint; (iii) to minimize a special type of polynomial of degree 4. In particular, with the solution to the aforementioned polynomials of degree 4, we can design an algorithm by incorporating the Dinkelbach approach withh 2 SDP's to obtain the minimum value and the minimum solution to the Tikhonov regularization of the total least squares problem with $L=I.$
报告人简介:
许瑞麟教授是数学、工程、管理跨领域学者。他于1987年毕业于台湾新竹清华大学数学系,1991年和1992年分别获美国卡罗莱纳州立大学硕士、博士学位。毕业后受聘于AT&T贝尔研究室研究员,主要研究飞行员排班问题、航班排程与高解析度电视。1993年返回台湾成功大学数学系任教,1999年起任教授。2008-2012年担任成功大学数学系系主任。许瑞麟教授主要学术研究领域为非线性二次规划、分数规划、演算法,在Mathematical Programming、European Journal of Operational Research等期刊发表论文近四十篇。曾任Pacific Journal of Optimization客座编辑,现任国际著名期刊Journal of Global Optimization副主编和Taiwanese Journal of Mathematics副主编。
邀请人:夏勇