Lisha Chen
Assistant ProfessorDepartment of Electrical and Computer Engineering
Goergen Insitute for Data Science and Artificial Intelligence
University of Rochester
Office: 624, Computer Studies Building
120 Trustee Rd, Rochester, NY, 14620
E-mail: lishachen9577 [AT] gmail.com (preferred);
lisha.chen [AT] rochester.edu
About me
I am an Assistant Professor in the Department of Electrical and Computer Engineering at the University of Rochester. I did my Ph.D. at Rensselaer Polytechnic Institute (RPI), fortunate to be advised by Prof. Tianyi Chen (now at Cornell).
I obtained my M.S. in Electrical Engineering from RPI in 2021, and my B.S. from Huazhong University of Science and Technology (HUST) in 2017.
My research lies at the intersection of machine learning, optimization, and statistical signal/image processing, with a current focus on the theory and applications of multi-objective and multi-level optimization and learning. Motivated by real-world scientific and engineering systems, I develop foundations to address problems involving competing objectives, resource constraints, multiple data modalities, heterogeneous users and devices, and hierarchical decision-making under uncertain environments. I aim to connect theoretical insights with practical needs.
News
Nov 2026: I will give a talk at the University of Illinois Urbana-Champaign (UIUC) Machine Learning Seminar. Looking forward to connecting and engaging in discussions!
Oct 2026: Congrats to Liuyuan Jiang on receiving the 2026 IEEE Signal Processing Society (SPS) Scholarship!
Oct 2026: I will attend Asilomar 2026 at Pacific Grove, CA. Looking forward to meeting old and new friends there.
Sep 2026: Our paper on uniform coverage of the Pareto front is accepted by NeurIPS 2026. Congrats to Liuyuan Jiang and Chentong Huang! We will present this work in Atlanta, GA, this December.
SURF: Steering the Scalarization Weight to Uniformly Traverse the Pareto Front
Preliminary slides CodeSURF studies how scalarization weights control the traversal speed along the Pareto front by analyzing the Pareto front geometry. Building on this, SURF proposes a geometry-guided weight sampling rule for uniform Pareto-front coverage. We apply the method to multi-objective RL and multi-objective LLM alignment.
@inproceedings{jiang2026surf, author = {Jiang, Liuyuan and Huang, Chentong and Chen, Lisha}, title = {{SURF}: Steering the Scalarization Weight to Uniformly Traverse the {Pareto} Front}, booktitle = {Advances in Neural Information Processing Systems}, year = {2026}, url = {https://arxiv.org/abs/2605.20619} }
Sep 2026: Happy to give a talk at OSU ECE department seminar on our recent works for preference-guided multi-objective learning.
Aug 2026: I will present a tutorial at NeurIPS 2026. More information will be available soon.
Aug 2026: Grateful to receive the support from Tinker Research Grant and COE.
Jul 2026: Two papers accepted by Asilomar 2026. Congrats to Chentong Huang and all other collaborators!
Feb 2026: One paper accepted by ICASSP 2026 as oral. Congrats to Liuyuan Jiang!
BIRQ: Bi-level self-labeling random quantization for self-supervised speech recognition
Dec 2025: Grateful to receive the support from Empire AI Beta!
Nov 2025: A new preprint on bilevel optimization is out.
Efficient Penalty-Based Bilevel Methods: Improved Analysis, Novel Updates, and Flatness Condition
Sep 2025: Two papers accepted by NeurIPS 2025. Congrats to Liuyuan Jiang and AFM Saif!
Objective Soups: Multilingual Multi-Task Modeling for Speech Processing
Beyond Value Functions: Single-loop Bilevel Optimization under Flatness Conditions
May 2025: Our paper is accepted by ICML 2025 as spotlight.
Efficient First-Order Optimization on the Pareto Set for Multi-Objective Learning under Preference Guidance
Sep 2024: Our paper is accepted by NeurIPS 2024.
FERERO: A Flexible Framework for Preference-Guided Multi-Objective Learning
May 2024: Our paper is accepted by JMLR.
Three-Way Trade-Off in Multi-Objective Learning: Optimization, Generalization and Conflict-Avoidance
Mar 2025: I have successfully defended my thesis. Sincere thanks to my committee members for their guidance and support.
Dec 2024: Our paper is accepted by IEEE Transactions on Audio, Speech and Language Processing.
Bilevel Joint Unsupervised and Supervised Training for Automatic Speech Recognition
Oct 2024: Honored and grateful to receive the IEEE Signal Processing Society (SPS) scholarship.
Jul 2024: I co-organize a special session on "Advances in Optimization for Machine Learning and Signal Processing" at IEEE SAM 2024 Workshop with Prof. Tianyi Chen and Prof. Kaiyi Ji.
Jun 2024: Our paper is accepted by Interspeech 2024.
M2ASR: Multilingual Multi-task Automatic Speech Recognition via Multi-objective Optimization
Apr 2024: I present a tutorial at ICASSP 2024 together with Prof. Tianyi Chen and Dr. Xiaodong Cui.
Feb 2024: I present a tutorial at AAAI 2024 together with Prof. Tianyi Chen and Prof. Zhuoran Yang.
Feb 2024: I am invited to give a talk at the University of Rochester ECE department seminar.
Dec 2023: Our paper is accepted by ICASSP 2024.
Variance Reduction Can Improve Trade-off in Multi-Objective Learning
Dec 2023: Our NeurIPS23 paper is accepted by CPAL Spotlight Track.
Nov 2023: I am honored to receive the IEEE Signal Processing Society (SPS) scholarship.
Oct 2023: I am honored to receive the Rensselaer's Founders Award of Excellence.
Sep 2023: Our paper is accepted by NeurIPS 2023. Check out the preprint:
Three-Way Trade-Off in Multi-Objective Learning: Optimization, Generalization and Conflict-Avoidance
I will present this work at:
- MoDL Meeting, New York City, NY - EaGL Workshop, Rochester, NY
- Asilomar, Pacific Grove, CA - NeurIPS, New Orleans, LA
Looking forward to meeting you there!
Feb 2023: Our paper is accepted by ICASSP 2023
A Nested Ensemble Method to Bilevel Machine Learning
Feb 2023: I am honored to be selected as Top Reviewer for AISTATS 2023.
Jan 2023: Our monograph with Prof. Osvaldo Simeone's group is published in Foundations and Trends in Signal Processing
Learning with Limited Samples -- Meta-Learning and Applications to Communication Systems
Sep 2022: Our paper is accepted by NeurIPS 2022
Understanding Benign Overfitting in Gradient-Based Meta Learning
May 2022: Our paper is accepted by ICML 2022
Sharp-MAML: Sharpness-Aware Model-Agnostic Meta Learning
Jan 2022: Our paper is accepted by AISTATS 2022
Is Bayesian Model-Agnostic Meta Learning Better than Model-Agnostic Meta Learning, Provably?
Dec 2021: I am honored to receive the inaugural Belsky Award for Computational Sciences and Engineering from RPI.