Xixi Hu

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I'm a Ph.D. student in computer science at The University of Texas at Austin, working with Prof. Qiang Liu.

Prior to joining UT Austin, I was a Master's student at the University of Michigan, where I worked with Andrew Owens.

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Experience
May 2024 - Present Google, Mountain View - Student Researcher
🚀 New Rectified Flow materials!

Explore our comprehensive, unified perspective on diffusion models and rectified flow (flow matching). Dive into the details:
• Uncover the intrinsic link between flows & diffusions
• Learn how stochastic sampling & Langevin guardrails ensure robust inference
• See how affine & curved interpolations unify DDIM, DDPM, and more
All in one comprehensive framework!
Links:
📖 Tutorials: https://rectifiedflow.github.io
💻 Code: https://github.com/lqiang67/rectified-flow
📜 Notes: https://cs.utexas.edu/~lqiang/PDF/flow_book.pdf
Preprint
AMO Sampler: Enhancing Text Rendering with Overshooting
Xixi Hu*, Keyang Xu*, Bo Liu, Qiang Liu, Hongliang Fei

arXiv

Paper  · Code (coming soon)  ·  bibtex
Publications
AdaFlow: Imitation Learning with Variance-Adaptive Flow-Based Policies
Xixi Hu, Bo Liu, Xingchao Liu, Qiang Liu

NeurIPS 2024

Paper  · Code  ·  bibtex
Learning to Map Efficiently by Active Echolocation
Xixi Hu, Senthil Purushwalkam, David Harwath, Kristen Grauman

IROS 2023

Mix and Localize: Localizing Sound Sources in Mixtures
Xixi Hu*, Ziyang Chen*, Andrew Owens

CVPR 2022

Paper  ·  Project page  ·  Code  ·  bibtex
Structure from Silence: Learning Scene Structure from Ambient Sound
Ziyang Chen*, Xixi Hu*, Andrew Owens

CoRL 2021 (Oral presentation)

Paper  ·  Project page  ·  Code  ·  bibtex
Teaching
  • Graduate student instructor Winter 2021 EECS598-012 Unsupervised Visual Learning @ UMich
  • Teaching assistant Spring 2023, CS 378 Introduction to Speech and Audio Processing @ UT Austin
  • Teaching assistant Fall 2023, CS 364M Principle of Machine Learning II @ UT Austin