学术报告 A Fast Smoothing Newton Method for Bilevel Hyperparameter Optimization in Logistic Classification李庆娜(北京理工大学) 报告时间:2023年9月9日星期六 14:30-15:15报告地点:沙河主楼E405 报告摘要: Logistic classification is a classical and well-performed learning method in machine learning. A regularization parameter, which significantly affects the classification performance, has to b...
应用数学系学术报告--- 分析与偏微分方程讨论班(2023秋季第1讲) Spectrum Analysis for the Vlasov-Poisson-Boltzmann System 钟明溁 (广西大学数学与信息科学学院教授)报告时间: 10:00-11:00,2023-9-8(星期五上午)报告地点: 腾讯会议:426-157-594https://meeting.tencent.com/dm/XjMFwSx41A6m内容简介: By identifying a norm capturing the effect of the forcing governed by the Poisson equation, we give a ...
北航数学论坛学术报告从插值到压缩感知许志强 教授(数学与系统科学研究院,中国科学院)时间:2023年9月13日(周三)16:00-17:00 地点:北京航空航天大学沙河校区E404摘要:插值是数学中经典的研究课题,人们已经对多项式插值、样条函数插值、以及频率有限函数的插值进行了深入研究,积累了丰富的结果。在数字信号时代,通过图像或信号的部分观测对目标对象进行重建,也可看做一个特定的插值问题。针对该问题,人们发展了压缩感...
学术报告Local well-posedness to the vacuum free boundary problem of full compressible Navier-Stokes equations in R^3魏正珍 暨南大学 报告时间:2023年9月9日 星期六 10:00-10:30 报告地点:腾讯会议:503-216-526 报告摘要: In this talk, we will discuss the local well-posedness of the free boundary problem of full compressible Navier-Stokes equations with physical vacuum in three dimensions. We will es...
学术报告Spectral gap of Dirac operators with application to Spetrum Zero Problem郭琪 报告时间:2023年9月6日 星期三 15:00-16:00 报告地点:沙河主楼E706 报告摘要: In this talk, we will discuss the spectralproperties of Dirac operators. First, we will go overthe physical background and geometric characteristics of Dirac operators. Then we willgive the variational characterization of eigenvaluesin ...
北航数学论坛学术报告Computing in Acoustics, Biomedical devices, and Structural Health MonitoringFangsen Cui教授 (Institute of High Performance Computing Singapore)时间:9月4日(周一)15:00-16:30地点:北京航空航天大学沙河校区国实 E404摘要:In this talk, the design, modeling, and simulation of on acoustics (vibration and noise, ultrasonic non-destructive testing, and structural health monitoring)...