Zuheng(David) Xu

A non-equilibrium random walker ///

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I am a Ph.D candidate in Statistics at University of British Columbia (UBC), under the supervision of Dr. Trevor Campbell. My research focuses on Bayesian inference and machine learning, particularly on the scalable Bayesian computation and generative modeling methods with theory guarantees. Prior to that I did my MSc. in Statistics at UBC as well, and completed my BSc. of Statistics at Sichuan University.

In my free time, I love to be busy at doing nothing. But you may find me in {"boxing","playing basketball","YouTubing", "Netflixing", "cooking"}. I am also the co-organizer of the Constance van Eeden seminar; each year we invite a distinguished statistician to visit UBC and give a guest lecture. This year, we are thrilled to announce that Dr. Sherri Rose from Stanford University will will be our Constance van Eeden Speaker! Dr. Rose will visit our department on April 4th, 2024, to deliver a talk on Ethical AI. If you're interested in attending the talk---remotely, for those not associated with UBC Statistics---you're welcome to register here.

I'm also part of the Turing.jl community, which has kindly included me as a member despite my minuscule contribution. If you are looking for a simple yet flexible normalizing flow package in Julia that is suited for approximate Bayesian inference, feel free to checkout our pacakge NormalizingFlows.jl. The package is currently a work in progress, so we welcome you to open an issue should you have any questions or suggestions.

Preprints

Turning waste into wealth: leveraging low-quality samples for enhancing continuous conditional generative adversarial networks
Xin Ding, Yongwei Wang, Zuheng Xu
AAAI Conference on Artificial Intelligence (accepted), 2024
[arXiv]
Embracing the chaos: analysis and diagnosis of numerical instability in variational flows
Zuheng Xu, Trevor Campbell
Advances in Neural Information Processing Systems (accepted), 2023
[arXiv]   [poster]   [slides]

Publication

MixFlows: principled variational inference via mixed flows
Zuheng Xu, Naitong Chen, Trevor Campbell
International Conference on Machine Learning, 2023
[arXiv]   [code]   [ICML]   [poster]
Bayesian inference via sparse Hamiltonian flows
Naitong Chen, Zuheng Xu, Trevor Campbell
Advances in Neural Information Processing Systems (oral), 2022
[arXiv]   [code]   [NeurIPS]
Distilling and transferring knowledge via cGAN-generated samples for image classification and regression
Xin Ding, Yongwei Wang, Zuheng Xu, Z. Jane Wang, William J. Welch
Expert Systems with Applications, 2023
[arXiv]   [code]   [ESA]
Continuous conditional generative adversarial networks: novel empirical losses and label input mechanisms
Xin Ding, Yongwei Wang, Zuheng Xu, Z. Jane Wang, William J. Welch
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2023
[arXiv]   [code]   [TPAMI]
The computational asymptotics of Gaussian variational inference and the Laplace approximation
Zuheng Xu, Trevor Campbell
Statistics and Computing 32(63), 2022
[arXiv]   [code]   [Statistics and Computing]   [Msc. Thesis]   [slides]
CcGAN: continuous conditional generative adversarial networks for image generation
Xin Ding, Yongwei Wang, Zuheng Xu, William J. Welch, Z. Jane Wang
International Conference on Learning Representations, 2021
[ICLR]   [code]
Bayesian pseudocoresets
Dionysis Manousakas, Zuheng Xu, Cecilia Mascolo, Trevor Campbell
Advances in Neural Information Processing Systems, 2020
[NeurIPS]   [code]
Student submission patterns in online homework and relationships to learning outcomes: a pilot study
Gianni Co, Zuheng Xu, Giorgio Sgarbi, Siqi Cheng, Ziqi Xu, Agnes d'Entremont, Juan Abelló
Proceedings of the Canadian Engineering Education Association Conference, 2019
[CEEA]

Teaching

    Teaching assistant of the Department of Statistics (UBC)
  • STAT 305 (Intro. to Stat. Inference) 2023 Spring
  • STAT 200 (Elementary Stat.)---head TA 2022 Spring
  • STAT 404 (Design of Experiment) 2021 Fall
  • STAT 302 (Intro. to Prob.) 2021 Spring
  • STAT 406 (Methods for Stat. Learning)---head TA 2020 Fall
  • STAT 461/561 (Stat. Theory II)---grad. mandatory course 2020 Spring
  • STAT 200 (Elementary Stat.) 2020 Spring
  • STAT 200 (Elementary Stat.) 2019 Spring
  • STAT 300 (Intermediate Stat.) 2018 Fall
    • Teaching assistant of School of Science (UBC)
  • SCIE 300 (Communicating Science) 2019 Fall

Honors/Awards

  • Top Reviewer Award (NeurIPS)
    2023
  • Statistics Graduate Teaching Assistant Awards (UBC Stat.)
    2022
  • SBSS Student Paper Award (AMS)
    Topic contributed talk at JSM 2022
    2022
  • Four-year Fellowship (FYF) For PhD students (UBC)
    Four-year Fellowship (4YF) Tuition Award (UBC)
    2020-2024
  • Faculty of Science Graduate Award (UBC) 2020-2023
  • Excellence Initiaitive PhD Award (UBC) 2020-2021
  • Meritorious Winner by COMAP (MCM) 2017

Education

  • Ph.D. of Statistics, University of British Columbia 2020-present
  • M.Sc. of Statistics, University of British Columbia 2018-2020
  • B.Sc. of Statistics, Sichuan University 2014-2018