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20

2023-09

Rota-Baxter groups, post-groups and related structures

报告题目：Rota-Baxter groups, post-groups and related structures报告人：生云鹤教授（吉林大学）时间：4月23日9：00-10：50地点：腾讯会议910767526摘要：Rota-Baxter operators on Lie algebras were first studied by Belavin, Drinfeld and Semenov-Tian-Shansky as operator forms of the classical Yang-Baxter equation.As a fundamental tool in studying integrable systems, the factorization theorem of...

20

2023-09

Randomized algorithms for fully online multiprocessor scheduling with testing

报告题目： Randomized algorithms for fully online multiprocessor scheduling with testing.报告人：龚铭炀（加拿大阿尔伯塔大学）报告摘要： Multiprocessor scheduling is one of the famous combinatorial optimization problems that receives numerous studies. Recently, its testing variant is investigated by several research groups, in which each job Jj arrives with a...

20

2023-09

非线性密码组件的设计与分析

20

2023-09

深度学习中的Adam类算法：收敛性分析以及在双层规划中的应用

报告题目：深度学习中的Adam类算法：收敛性分析以及在双层规划中的应用报告人：胡潇尹（浙大城市学院）报告时间：2023年6月7日（周三）16:00报告地点：海纳苑2幢105摘要：本报告主要关注Adam类方法在求解非光滑优化问题，特别是在训练非光滑的深度神经网络时的收敛性分析。我们提出了一个统一的双时间尺度步长（two-timescale stepsize）的理论框架，应用微分包含（differential inclusion）来分析Adam类方法所产生迭代点的极限性...

20

2023-09

A New Framework for the Stability Analysis of Perturbed Saddle-point Problems and Applications

报告题目：A New Framework for the Stability Analysis of Perturbed Saddle-point Problems and Applications报告人：洪庆国（宾州州立大学）报告时间：2023年6月12日14:00-16:00报告地点：海纳苑2幢203报告摘要：This talk provides a new abstract stability result for perturbed saddle-point problems which is based on a proper norm fitting. We derive the stability condition according to Babuska’s theory from a ...

20

2023-09

Some new results on repeated patterns in proper edge colorings

题目：Some new results on repeated patterns in proper edge colorings报告人：张韬（之江实验室）时间、地点：2023年6月28日8：30-10：30，海纳楼2幢203摘要：In this talk, we will study a new extremal problem recently posed by Conlon and Tyomkyn [Repeated patterns in proper colourings, SIDMA, 2021]. Given a graph $H$ and an integer $k\geqslant 2$, let $f_{k}(n,H)$ be the smallest number of colors $c$ suc...

20

2023-09

Generalization Analysis for Contrastive Representation Learning

题目：Generalization Analysis for Contrastive Representation Learning报告人：应益明教授（University at Albany, State University of New York）时间：2023年6月30日（星期五）9：00地点：腾讯会议会议ID：925-524-124会议密码：310058Abstract: In this talk, I will present recent progress in establishing the learning theory foundation for Contrastive Representation Learning (CRL). CRL has demonstrated ...

20

2023-09

Hölder stability of quantitative photoacoustic tomography based on partial data

题目： Hölder stability of quantitative photoacoustic tomography based on partial data.报告时间:2023年7月26日 10：00-11：00报告地点：海纳苑2幢210报告厅摘要: The talk is related to the inverse problem of reconstructing the diffusion and absorption coefficients of the diffusion equation from internal data in photo-acoustic imaging. I will show that the problem is Hölder stable in subregi...

20

2023-09

The Balanced Augmented Lagrangian Method for Convex Programming

报告题目：The Balanced Augmented Lagrangian Method for Convex ProgrammingAbstract: We consider the canonical convex minimization problem with both linear equality and inequality constraints, and reshape the classic augmented Lagrangian method (ALM) by better balancing its subproblems. As a result, iterations of the balanced ALM treat the objective function and the coeﬃcient matrix in the constrain...

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