Yixuan's bio photo

Sharon Y. Li

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I am currently a postdoc researcher in the CS department at Stanford University, working with Chris Ré. I will be joining the Computer Sciences Department at University of Wisconsin Madison as an assistant professor, starting in Fall 2020. Previously, I completed my PhD from Cornell University in 2017, where I was advised by John E. Hopcroft. My thesis committee members are Kilian Q. Weinberger and Thorsten Joachims. I've spent time at Google AI twice as an intern, and Facebook AI as a Research Scientist.

My principal research interests are in machine learning and representation learning. I am excited about developing computational methods that can extract meaningful representations from masses of complex data, in forms of high-dimensional sensory inputs such as natural images, as well as structured data such as graphs.

In particular, my recent research focuses on designing machine learning models to enable more generalizable and reliable representations for complex visual data, in settings where strong human supervision is either present or absent. Research topics that I'm working on, or have worked on, include:

  • Learning with less supervision: How can we build models to learn representations that generalize to the open world, by reducing the amount of human supervision provided?
  • Learning under uncertainty: How to make neural networks more robust to abnormal examples, such as out-of-distribution examples and adversarial examples?
  • Learning through collective intelligence: How can we train multiple learning agents and combine them to improve prediction?
  • Learning graph-structured representations and dynamics: How to design scalable algorithm to discover meaningful sub-structure in graphs with billions of nodes? How to model complex and possibly dynamic processes over large networks?

  • To tackle some of these research challanges, I've developed efficient and scalable machine learning methods that span topics on ensemble modeling, subspace learning, fast spectral clustering algorithms, semi-supervised learning and weakly supervised learning.

    I travel and occasionally take photos. Here is my pictorial Travel Memo. I go under multiple names: Sharon Li (preferred), Yixuan Li and 李一璇.


    12/3/2019: Honored and thrilled to be featured in Forbes 30 Under 30 list in Science.
    4/28/2019: Paper on large-scale weakly supervised learning for e-commerce search accepted to KDD 2019.
    3/8/2019: Honored to be featured in 30 Under 30 Leading Women in AI.
    2/24/2019: Paper on adversarial defense using KNN accepted as an oral presentation at CVPR 2019.
    2/24/2019: I will be organizing ICML'19 workshop on Uncertainty and Robustness in Deep Learning.
    12/13/2018: I will be giving a talk at Deep Learning Summit San Francisco in Jan 2019.
    10/1/2018: Gave an invited talk at Microsoft Research AI in Redmond, WA.
    9/27/2018: Served on a panel of Women in Research at Facebook.
    9/26/2018: Gave a talk at Grace Hopper Celebration (GHC) Artificial Intelligence track in Houston, TX.
    7/3/2018: Paper on exploring the limits of weakly supervised pretraining accepted into ECCV 2018.
    5/12/2018: Paper on understanding the loss surface of neural networks accepted into ICML 2018.
    4/3/2018: Received CVPR'18 Doctoral Consortium travel award.
    3/13/2018: Served on a panel at Facebook's Women in Research Lean In (WiRL) Circle.
    1/29/2018: Paper on detecting out-of-distribution examples in neural networks accepted into ICLR 2018.
    11/25/2017: Received ACM-W Scholarship in 2017.
    10/16/2017: I will be presenting at Women in Machine Learning (WiML) workshop in December this year.
    10/2017: Gave a talk at Grace Hopper Celebration (GHC) Artificial Intelligence track in Orlando, FL.
    8/5/2017: Selected as one of the Rising Stars in EECS 2017 by Stanford University.
    6/6/2017: Paper accepted for publication in Transactions on Knowledge Discovery from Data (TKDD).
    3/12/2017: Received ICLR 2017 Student Travel Award.
    2/27/2017: Paper on StackedGAN has been accepted into CVPR 2017.
    2/6/2017: Paper on Snapshot Ensembles has been accepted into ICLR 2017.