学术报告
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A Moment-Based Hermite WENO Scheme with Unified Stencils for Hyperbolic Conservation Laws题目:A Moment-Based Hermite WENO Scheme with Unified Stencils for Hyperbolic Conservation Laws报告人:邱建贤 教授 (厦门大学 数学科学学院)地点:致远楼108室时间:2024年6月14日 星期五 下午5:00-6:00摘要:In this presentation, we introduce a fifth-order moment-based Hermite weighted essen[1]tially non-oscillatory scheme with unified stencils (termed as HWENO-U) for hyperbolic conservation laws. T...2024年06月05日
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Analyze Time-to-event Data Using Survival Mixed Membership Blockmodel题目:Analyze Time-to-event Data Using Survival Mixed Membership Blockmodel报告人:宋方达 助理教授 (香港中文大学(深圳))地点:致远楼108室时间:2024年6月5日 15:00-16:30摘要:Whenever we send a message via a channel such as E-mail, Facebook, WhatsApp, WeChat, or LinkedIn, we care about the response rate—the probability that our message will receive a response—and the response time—how lon...2024年06月04日
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Shortest Filling Geodesics on Hyperbolic Surfaces题目:Shortest Filling Geodesics on Hyperbolic Surfaces报告人:高悦 博士 (安徽师范大学)地点:致远楼108室时间:2024年6月6日 星期四 15:30—16:30摘要:In this talk, we show that the minimal length of a filling geodesic on a genus $g$ hyperbolic surface in the surface moduli space is realized by the geodesic whose complement is a right-angled regular $(8g-4)$-gon, among the filling geodesics whos...2024年05月31日
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Some Open Problems in Geometric Tomography and Convex Geometry, including the Hyperplane and Mahler Conjectures题目:Some Open Problems in Geometric Tomography and Convex Geometry, including the Hyperplane and Mahler Conjectures报告人:Prof. Richard Gardner (Western Washington University)地点:宁静楼104室时间:2024年5月29日 10:00-11:30摘要: The talk focuses on just a few of the 66 problems stated in my book Geometric Tomography that are among those still open. The selected problems happen to fall with...2024年05月29日
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General Pairwise Comparison Models题目:General Pairwise Comparison Models报告人:韩睿渐 助理教授(香港理工大学)地点: 致远楼108室时间:2024年6月3日 10:00-11:30摘要:Statistical estimation using pairwise comparison data is an effective approach to analyzing large-scale sparse networks. In this talk, we propose a general framework to model the mutual interactions in a network, which enjoys ample flexibility in terms of model ...2024年05月28日
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Harder-Narasimhan 理论:从算术几何到博弈论题目:Harder-Narasimhan 理论:从算术几何到博弈论报告人:陈华一 教授 (西湖大学)地点:致远楼101室时间:2024年5月24日 星期五 15:00-16:00摘要:Harder-Narasimhan 分解是代数几何中一个基础构造,它说明了光滑射影曲线上的向量丛可以唯一分解成具有斜率下降半稳定子商的子丛链。在数的几何中,Stuhler 也证明了类似的结果。本报告将介绍和 Marion Jeannin 合作的一个工作,从博弈论的角度出发给这个共性提出一个理论性的...2024年05月21日
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Decentralized Reduced Rank Regression for Response Partition题目:Decentralized Reduced Rank Regression for Response Partition姓名:毛晓军 副教授 (上海交通大学)地点:致远楼108室时间:2024年5月22日 10:00-11:30Abstract:Distributed learning in decentralized networks has been extensively studied and applied in various machine-learning scenarios. However, previous research primarily focused on data partitioning based on samples. In this paper, we address th...2024年05月16日
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Sphere Packings in Dimensions 8 and 24 - At The Crossroad of Geometry, Number Theory and Fourier Analysis题目:Sphere Packings in Dimensions 8 and 24 - At The Crossroad of Geometry, Number Theory and Fourier Analysis报告人:Prof. Karoly Boroczky (Renyi institute,Hungary)地点:致远楼101室时间:2024年5月21日 10:00-11:00摘要:The problem of dense packings of equal spheres in R^n - a problem arising in number theory and geometry - goes back to Kepler, Lagrange and Gauss, still the optimal density i...2024年05月16日
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The Reverse-Log-Brunn-Minkowski Inequality题目:The Reverse-Log-Brunn-Minkowski Inequality报告人:席东盟 教授 (上海大学)地点:致远楼101室时间:2024年5月21日 9:00-10:00摘要: Firstly, we propose our conjectured reverse-log-Brunn-Minkowski inequality (RLBM). Secondly, we show that the (RLBM) conjecture is equivalent to the log-Brunn-Minkowski (LBM) conjecture proposed by Boroczky-Lutwak-Yang-Zhang. We name this as “reverse-to- forward ...2024年05月16日
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Manifold Principal Component Analysis and Matrix Elliptical Factor Model题目:Manifold Principal Component Analysis and Matrix Elliptical Factor Model报告人:孔新兵 教授 (南京审计大学)地点:致远楼101室时间:2024年5月20日 星期一 20:00-21:00摘要:In this talk, we, for the first time, propose the matrix elliptical factor model, by taking the heavy tails of observations (e.g., financial returns) into consideration. Manifold principal component analysis (MPCA) is, for ...2024年05月15日

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