香港城市大学周定轩教授、武汉大学杨奇祥教授学术讲座预告

应数学与计算科学学院及广西高校数据分析与计算重点实验室邀请,香港城市大学周定轩教授、武汉大学杨奇祥教授将于11月22日来我校讲学,欢迎全校师生踊跃参加。学术报告具体安排如下:

 

    1、学术报告题目:Distributed learning and online learning with big data

时间:2016年11月22日(周二)下午16:00-17:00
    地点:金鸡岭校区F电2
    主讲人:周定轩 教授

    报告摘要:Analyzing and processing big data has been an important and challenging task in various fields of science and technology. Distributed learning and online learning provide powerful methods for deep learning in handling big data and form important topics in learning theory.

         Distributed learning is based on a divide-and-conquer approach and consists of three steps: first we divide oversized data into subsets and each data subset is distributed to one individual machine, then each machine processes the distributed data subset to produce one output, finally the outputs from individual machines are combined to generate an output of the distributed learning algorithm. It is expected that a distributed learning algorithm can perform  as efficiently as one big machine which could process the whole oversized data, in addition to

the advantages of reducing storage and computing costs.

        Online learning processes samples one-by-one. It has been applied to various learning tasks and is closely related to some topics in optimization, image processing, compressed sensing and information theory.

        This talk describes some mathematical analysis of distributed learning and online learning, and demonstrates error bounds and learning rates for learning with least squares regularization schemes in reproducing kernel Hilbert spaces.

 

    报告人简介:周定轩,香港城市大学讲座教授。1991年在浙江大学获得博士学位,毕业后先后到中科院、德国和加拿大攻读博士后。1996年到香港城市大学任教,曾任香港城市大学数学系系主任,香港数学学会副会长。现为香港研究资助局(RGC)理科组专家成员, 浙江大学竺可桢学院香港院友会会长, SCI杂志Analysis and Application主编,Applied and Computational Harmonic Analysis, Journal of Approximation Theory,Complex Analysis and Operator Theory, Journal of Computational Analysis and Analysis, 高校应用数学学报等杂志的编委。周定轩教授主要从事学习理论、数据科学、小波分析和逼近论方面的研究工作,在国际重要刊物上发表论文100多篇,入选2014,2015全球高引作者榜。1993年获得德国最高等级“洪堡”奖学金,2005年获国家杰出青年科学基金。

 

 

    2、学术报告题目:Wavelets  and well-posedness of Navier-Stokes equations  with initial data in generalized Morrey space

时间:2016年11月22日(周二)下午17:00-18:00
    地点:金鸡岭校区F电2
    主讲人:杨奇祥教授

 

报告人简历:

(1) 杨奇祥,教授,博士生导师。 1995年毕业于法国巴黎9大,获理学博士学位。随后在武汉大学工作,2002年评聘为武汉大学数学与统计学院教授。

(2) 目前主要从事小波,函数空间,算子理论,非线性微分方程等领域的研究。

(3)在 Appl. Comput. Harmon. Anal., J. Differential Equations; Michigan Math. J.; Nonlinear Anal.; J. Math. Anal. Appl.等国际数学重要期刊发表研究论五十四篇。

(4)现担任美国《Mathematical Reviews》评论员。

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