標題:Random batch methods for interacting particle systems and molecular dynamics
報告時間:2024年3月26日(星期二)16:00-17:00
報告地點:人民大街校區數學與統計學院二樓會議室
主講人:金石
主辦單位:數學與統計學院
報告內容簡介:
We first develop random batch methods for classical interacting particle systems with large number of particles. These methods use small but random batches for particle interactions, thus the computational cost is reduced from O(N^2) per time step to O(N), for a system with N particles with binary interactions. For one of the methods, we give a particle number independent error estimate under some special interactions.
This method is also extended to molecular dynamics with Coulomb interactions, in the framework of Ewald summation. We will show its superior performance compared to the current state-of-the-art methods (for example PPPM) for the corresponding problems, in the computational efficiency and parallelizability.
主講人簡介:
金石,現為上海交通大學自然科學研究院院長,數學學院講席教授。他同時擔任上海國家應用數學中心聯合主任與上海交通大學重慶人工智能研究院院長。他是美國數學會首批會士,美國工業與應用數學學會會士,和2018年國際數學家大會邀請報告人,并于2021年當選為歐洲人文與自然科學院(Academia Europaea)外籍院士與歐洲科學院(European Academy of Sciences)院士。他的研究方向包括科學計算,動理學理論,多尺度計算,計算流體力學,不確定性量化,機器學習與量子計算等。