学术报告
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23
2024-04
Model-free Variable Selection in High Dimension via Constrained Kernel Regression题目: Model-free Variable Selection in High Dimension via Constrained Kernel Regression 报告人：李长城 教授(大连理工大学) Abstract： We propose a model-free variable selection approach, namely constrained kernel regression. Instead of relying on model-bas...
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23
2024-04
格基自举型全同态加密算法简介报告题目：格基自举型全同态加密算法简介 报告人：王晗 博士（中国科学院信息工程研究所） 报告摘要：全同态加密作为隐私计算的重要底层技术，受到人们的广泛关注。自举算法作为全同态加密算法的重要组成部分，已经称为近几年来的研究热点。本报告将聚焦基于GSW的自举算法的设计于应用。我们先简单的回顾现有GSW型自举算法的发展历程，总结其特点。然后介绍我们最新提出的适于GSW型自举算法的新型批处理计算框架。该框架与AP14/FHEW/TFHE等现有自举技术兼容。在与这些技术结...
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23
2024-04
On p-adic Minkowski's Theorems报告题目：On p-adic Minkowski's Theorems 报告人：邓映蒲 研究员（中国科学院数学与系统科学研究院） 报告摘要：Dual lattice is an important concept of Euclidean lattices. We first give the right definition of the concept of the dual lattice of a p-adic lattice from the dual...
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19
2024-04
Explicit evaluation of Stokes matrices via the isomonodromic approach动力系统讨论班 题目：Explicit evaluation of Stokes matrices via the isomonodromic approach 报告人：徐晓濛教授（北京大学） 摘要：The Stokes matrices of linear systems and the associated isomonodromy equation play important roles in the study of Frobenius manifold...
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17
2024-04
Selection principle of Generalized Hamilton-Jacobi equations动力系统讨论班 题目：Selection principle of Generalized Hamilton-Jacobi equations 报告人：张建路教授（中科院数学所） 摘要：In 1987, Lions firstly proposed the homogenization for Hamilton-Jacobi equations, which revealed the significance of effective Hamiltonian in ...
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17
2024-04
Action and periodic orbits of area-preserving surface diffeomorphisms动力系统讨论班 题目： Action and periodic orbits of area-preserving surface diffeomorphisms 报告人：曲华迪（南方科技大学） 摘要：We are interested in the periodic points of area-preserving diffeomorphisms on surfaces. The celebrated Poincare-Birkhoff fixed point ...
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15
2024-04
Clustered Federated Learning based on Nonconvex Pairwise Fusion题目：Clustered Federated Learning based on Nonconvex Pairwise Fusion 报告人：孙怡帆 摘要：This study investigates clustered federated learning (FL), one of the formulations of FL with non-i.i.d. data, where the devices are partitioned into clusters ...
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09
2024-04
Ambrosetti-Prodi problems for Robin (p,q)-equationsTitle: Ambrosetti-Prodi problems for Robin (p,q)-equations报告人：Vicentiu Radulescu Institute of Mathematics of the Romanian Academy, Bucharest and University of Craiova, Romania; AGH University of Krakow, Poland Abstract: I shall report o...
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09
2024-04
The connecting homomorphism in Hermitian K-theory题目：The connecting homomorphism in Hermitian K-theory 报告人：谢恒 教授（中山大学） 摘要：Higher algebraic K-theory was introduced by Daniel Quillen in 1972, earning him a Fields Medal. In his work, Quillen constructs a localization sequence, which i...
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04
2024-04
Transfer principles for Galois cohomology and Serre's Conjecture II题目：Transfer principles for Galois cohomology and Serre's Conjecture II报告人：Diego Bruno Izquierdo （法国巴黎高工）摘要：In this talk, I will present some transfer principles for the cohomological dimension of fields. I will then show some applications to S...