报告题目：Seismic Tomography with Frozen Gaussian Approximation and Random Batch Method

报告时间：2022-09-06  10:00 - 11:00

报告人：Prof. Zhongyi Huang   Department of Mathematical Sciences, Tsinghua University

腾讯会议ID：569-517-783

报告入口：https://meeting.tencent.com/dm/kC2Y2GEmFOPX

Abstract：Seismic tomography solves high-dimensional optimization problems to image subsurface structures of Earth. In this talk, we propose to use random batch methods to construct the gradient used for iterations in seismic tomography. Specifically, we use the frozen Gaussian approximation to compute seismic wave propagation, and then construct stochastic gradients by random batch methods. We also provide a rigorous convergence analysis for the inverse problems of acoustic wave propagation arising from seismic tomography.