Joshua P. Gardner Paul G. Allen School of Computer Science and Engineering Google Artificial Intelligence Lab The University of Washington jpgard@cs.washington.edu Google Scholar | Github | Linkedin

I am currently pursuing a PhD in computer science at the University of Washington's Paul G. Allen School of Computer Science & Engineering, where I am fortunate to be advised by Ludwig Schmidt and Zoran Popović . I hold an M.S. in Applied Statistics and an M.S. in Information Science from the University of Michigan. I also hold a B.A. with Highest Honors in Philosophy from the University of Michigan.

My research focuses on empirical machine learning: characterizing the conditions under which modern machine learning models succeed and fail, and using this understanding to develop improved methods for machine learning. This includes understanding models' overall performance, but also their robustness to distribution shift, fairness, and privacy, with the aim of using this empirical understanding to select or design new methods that address these limitations. I have studied a diverse set of domains and applications under this general theme, including tabular and structured data; multimodal learning; music and audio (e.g. transcription, synthesis); federated and collaborative learning; and reproducibility.

I was fortunate to spend just shy of two years as a Research Intern + Student Researcher on the Magenta team at Google Brain, working on machine learning problems in the music and audio domain, including MT3 (see additional publications here).

Awards and honors for my past work include a Best Paper Award at the International Conference on Learning Analytics and Knowledge (LAK), the Margaret Mann Award, the UMSI Professional Practice Fellowship, and the William K. Frankena Prize.

Selected Publications

For a full list of publications see my research page or Google Scholar profile.

• Subgroup Robustness Grows on Trees: An Empirical Baseline Study
  Josh Gardner, Zoran Popović, Ludwig Schmidt.
  Neural Information Processing Systems (NeurIPS) 2022.
  [arxiv] [code]

• OpenFlamingo: An Open-Source Framework for Training Vision-Language Models with In-Context Learning
  Anas Awadalla, Irena Gao, Josh Gardner, Jack Hessel, Yusuf Hanafy, Wanrong Zhu, Kalyani Marathe, Yonatan Bitton, Samir Gadre, Jenia Jitsev, Simon Kornblith, Pang Wei Koh, Gabriel Ilharco, Mitchell Wortsman, Ludwig Schmidt.
  Paper coming soon!
  [blog] [code]

• MT3: Multi-Task Multitrack Music Transcription
  Josh Gardner, Ian Simon, Ethan Manilow, Curtis Hawthorne, Jesse Engel.
  International Conference on Learning Representations (ICLR) 2022.
  Spotlight Presentation (top 6.7% of submissions)
  [arxiv] [web] [blog] [code]

• Advances and Open Problems in Federated Learning.
  Peter Kairouz, H. Brendan McMahan, [...], Josh Gardner, [...] . (59 authors.)
  Foundations and Trends® in Machine Learning (2021): Vol. 14: No. 1-2, pp 1-210.
  [doi]

• Evaluating the Fairness of Predictive Student Models Through Slicing Analysis
  Josh Gardner, Christopher Brooks, and Ryan Baker.
  International Conference on Learning Analytics and Knowledge (LAK) 2019.
  Best Paper Award
  [pdf]