Cewen Liu

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Revision as of 09:03, 26 March 2022 by Lcw (talk | contribs) (Created page with "= Cewen Liu| 刘策文 = 250px|thumb <br> '''PhD candidate''' in<br> Department of Earth System Science<br> Tsinghua University<br> <br> '''Email:''' Liucw17@mails.tsinghua.edu.cn<br> '''Address:''' Room S814, Mengminwei Building, Tsinghua University, Beijing, China == Education Background == '''''Sep 2017 – Ongoing'''''<br> Tsinghua University, Ph.D. candidate<br> '''''Sep 2013 – June 2017'''''<br> China University of Geosciences, B.S. i...")
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Cewen Liu| 刘策文

Liucewen.jpeg


PhD candidate in
Department of Earth System Science
Tsinghua University

Email: Liucw17@mails.tsinghua.edu.cn
Address: Room S814, Mengminwei Building, Tsinghua University, Beijing, China

Education Background

Sep 2017 – Ongoing
Tsinghua University, Ph.D. candidate

Sep 2013 – June 2017
China University of Geosciences, B.S. in Geophysics

Intern Experience

Jul 2018 – Ongoing
BGP Beijing R&D center, Research Engineer

Jul 2017 – Sep 2017
National Supercomputer center in Wuxi, Research Engineer


Research Interest

Machine Learning in Geophysics

High resolution imaging, Point Spread Function(PSF), Model Inversion, CNN, ResNet

  • Deep learning-based point spread function deconvolution for migration image deblurring. (C. Liu, M. Sun, et al. 2020, Geophysics Article, Moderate Revision)
  • Enhance 3D seismic images resolution by deconvolving point spread function. (C. Liu and H Fu, First International Meeting for Applied Geoscience & Energy. 2021)
  • Enhancing the Resolution of Seismic Imaging by Deconvolving Point Spread Function. (C. Liu, N. Dai et al. 2020, EAGE Annual conference)
  • Inverting Elastic Model Properties Using ResNet. (C. Liu, M. Sun, et al. 2020, EAGE Digital Conference)
  • see more from Geophysics



Full Waveform Inversion

Multi-scale, Source encoded, Cycle Skipping, Marmousi model

  • We study the influence of different iterative methods on the results of full waveform inversion, and the influence of initial model, forward modeling and data noise on the accuracy of full waveform inversion. (Bachelor’s degree thesis, 2017)
  • A source-encoded Full Waveform Inversion on BP model is tested, where multiscale strategy is used.


High Performance Geo-Computing

SW26010, Large Scale Earthquake; CUDA, Athread, MPI

  • Large Scale Earthquake Simulation based on the SW-Taihulight Supercomputer
  • CPC Competition based on the SW-Taihulight Supercomputer (September, 2020)





Competition & Awards

Secondary Scholarship, Tsinghua University, 2020
Bronze Award, The 4th domestic CPU parallel application challenge, 2020