学术报告
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20
2024-05
Nodal set and Singular set of Elliptic and Parabolic PDEs题目：Nodal set and Singular set of Elliptic and Parabolic PDEs 报告人: 江文帅 教授 （浙江大学） 摘要： In this talk, we consider solution of second order Elliptic PDEs or Parabolic PDEs. In the first part we will study the Hausdorff measure of the s...
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20
2024-05
高维大数据的分布式稀疏回归算法及其应用题目：高维大数据的分布式稀疏回归算法及其应用 报告人:王珊珊 副教授（北京航空航天大学） 摘要：随着互联网技术和人工智能的飞速发展，全球数据量迎来了爆炸式增长，将现代社会带入了“大数据”时代。许多数据集都具有庞大的样本量和高维度特征，形成了所谓的“高维大数据”。同时，这些高维大数据的变量之间往往存在极高的相关性，也给有效分析带来了巨大挑战。因此，本文面向高维大数据提出了一种分布式稀疏回归方法。具体地，通过分布式奇异值分解（SVD）实现了对高维大数据的...
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20
2024-05
Statistical Inference in Reinforcement Learning题目：Statistical Inference in Reinforcement Learning 报告人:Chengchun Shi （ London School of Eco- nomics and Political Science） 摘要：Reinforcement learning (RL) is concerned with how intelligence agents take actions in a given environ...
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20
2024-05
Powers of ghost ideals题 目：Powers of ghost ideals 报告人：扶先辉 教授（东北师范大学） 摘要: In this talk, the notion of a ghost ideal in an exact category is introduced, and a theory of powers of a ghost ideal is developed. For an ordinal λ, the notion of λ-th inductive power ...
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16
2024-05
Multi-layer Networks: Sparsity, Heterogeneity and Dependency题目：Multi-layer Networks: Sparsity, Heterogeneity and Dependency 报告人：王军辉教授 香港中文大学 摘要 Network data has attracted increasing research interests across various scientific communities. In this talk, I will talk about some of ou...
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16
2024-05
Semiparametric Structural Equation Models with Interval-Censored Data题目：Semiparametric Structural Equation Models with Interval-Censored Data 报告人:李树威 副教授（广州大学） 摘要：Structural equation models offer a valuable tool for delineating the complicated interrelationships among multiple variables, including obs...
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14
2024-05
Gluing and lifting exact model structures for recollements of exact categories题 目：Gluing and lifting exact model structures for recollements of exact categories 报告人：胡江胜 教授（杭州师范大学） 摘要:A recollement of exact categories can be regarded as a short exact sequence of exact categories where the functors involving admit...
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13
2024-05
Joint modeling approaches for censored predictors due to detection limits with applications to metabolites data题目: Joint modeling approaches for censored predictors due to detection limits with applications to metabolites data报告人：叶鹏副教授 （对外经济贸易大学统计学） 摘要：Measures of substance concentration in urine, serum or other biological matrices often have an assa...
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13
2024-05
Optimal dispersal strategy for a stage-structured species in periodic discrete habitat题目：Optimal dispersal strategy for a stage-structured species in periodic discrete habitat 报告人：方健 教授（哈尔滨工业大学） 摘要：Starting from an age-structured diffusive population growth law in a discrete and periodic habitat, we formulate a stage-st...
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12
2024-05
《应龙气象大模型—高分辨率区域智能预报》题目：《应龙气象大模型—高分辨率区域智能预报》 报告人：尹俊平 研究员（北京应用物理与计算数学研究所） 摘要： 天气预报在国民经济建设及国家安全等领域均起着至关重要的基础性作用。本报告针对当前天气预报领域一些焦点问题（如时空高分辨、极端等），采用数据与机理结合的方法，开展了系列智能预报方法研究。 报告人简介： 尹俊平，男，1979年08月生。北京应用物理与计算数学研究所研究员、博士生导师、博士后合作导师，大数据团队首席科学家。兼国...