Publications

2025

1. CACM

   

   Making AI Less ’Thirsty’

   Pengfei Li, Jianyi Yang, Mohammad A. Islam, and 1 more author

   Commun. ACM, Jun 2025

   Abs HTML PDF

   Uncovering and addressing the secret water footprint of AI models

2. eEnergy

   Learning-Augmented Online Control for Decarbonizing Water Infrastructures

   Jianyi Yang, Pengfei Li, Tongxin Li, and 2 more authors

   In Proceedings of the 16th ACM International Conference on Future and Sustainable Energy Systems, Jun 2025
3. eEnergy

   Learning for Sustainable Online Scheduling with Competitive Fairness Guarantees

   Pengfei Li, Nicolas Christianson, Jianyi Yang, and 3 more authors

   In Proceedings of the 16th ACM International Conference on Future and Sustainable Energy Systems, Jun 2025
4. COMPASS

   A Water Efficiency Dataset for African Data Centers

   Noah Shumba, Opelo Tshekiso, Pengfei Li, and 2 more authors

   In Proceedings of the 8th ACM SIGCAS/SIGCHI Conference on Computing and Sustainable Societies, Jun 2025
5. SIGMETRICS

   Learning-Augmented Decentralized Online Convex Optimization in Networks

   Pengfei Li, Jianyi Yang, Adam Wierman, and 1 more author

   In Proceedings of the ACM on Measurement and Analysis of Computing Systems, Jun 2025

   HTML PDF

2024

1. eEnergy

   Towards Environmentally Equitable AI via Geographical Load Balancing

   Pengfei Li, Jianyi Yang, Adam Wierman, and 1 more author

   In Proceedings of the 15th ACM International Conference on Future and Sustainable Energy Systems, Jun 2024

   HTML PDF
2. eEnergy

   A Dataset for Research on Water Sustainability

   Pranjol Sen Gupta, Md Rajib Hossen, Pengfei Li, and 2 more authors

   In Proceedings of the 15th ACM International Conference on Future and Sustainable Energy Systems, Jun 2024

   HTML PDF
3. ICML

   Building Socially-Equitable Public Models

   Yejia Liu, Jianyi Yang, Pengfei Li, and 2 more authors

   In Proceedings of the 41st International Conference on Machine Learning, Jun 2024

   HTML PDF
4. NeurIPS

   Online Budgeted Matching with General Bids

   Jianyi Yang, Pengfei Li, Adam Wierman, and 1 more author

   In Proceedings of the 38th International Conference on Neural Information Processing Systems, Jun 2024

   HTML PDF
5. SIGMETRICS

   Online Allocation with Replenishable Budgets: Worst Case and Beyond

   Jianyi Yang, Pengfei Li, Mohammad J. Islam, and 1 more author

   In Proceedings of the ACM on Measurement and Analysis of Computing Systems, Jun 2024

   HTML PDF
6. HotEthics

   Towards Socially and Environmentally Responsible AI

   Pengfei Li, Yejia Liu, Jianyi Yang, and 1 more author

   Workshop on Hot Topics in Ethical Computer Systems, co-located with ASPLOS, Jun 2024

   HTML PDF
7. HotCarbon

   Geographical Server Relocation: Opportunities and Challenges

   Yejia Liu, Pengfei Li, Daniel Wong, and 1 more author

   Workshop on Sustainable Computer Systems, co-located with OSDI, Jun 2024

   HTML PDF

2023

1. INFOCOM

   Robustified Learning for Online Optimization with Memory Costs

   Pengfei Li, Jianyi Yang, and Shaolei Ren

   In IEEE INFOCOM 2023 - IEEE Conference on Computer Communications, Jun 2023

   HTML PDF
2. ICML

   

   Learning for edge-weighted online bipartite matching with robustness guarantees

   Pengfei Li, Jianyi Yang, and Shaolei Ren

   In Proceedings of the 40th International Conference on Machine Learning, Jun 2023

   HTML PDF
3. NeurIPS

   

   Robust learning for smoothed online convex optimization with feedback delay

   Pengfei Li, Jianyi Yang, Adam Wierman, and 1 more author

   In Proceedings of the 37th International Conference on Neural Information Processing Systems, Jun 2023

   HTML PDF
4. NeurIPS

   Anytime-competitive reinforcement learning with policy prior

   Jianyi Yang, Pengfei Li, Tongxin Li, and 2 more authors

   In Proceedings of the 37th International Conference on Neural Information Processing Systems, Jun 2023

   HTML PDF

2022

1. SIGMETRICS

   

   Expert-Calibrated Learning for Online Optimization with Switching Costs

   Pengfei Li^*, Jianyi Yang^*, and Shaolei Ren

   Proceedings of the ACM on Measurement and Analysis of Computing Systems, Jun 2022

   HTML PDF

2021

1. CVPRW

   Sparse Activation Maps for Interpreting 3D Object Detection

   Qiuxiao Chen, Pengfei Li, Meng Xu, and 1 more author

   In 2021 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW), Jun 2021

   HTML PDF

2020

1. ECCV

   

   Multi-person 3D Pose Estimation in Crowded Scenes Based on Multi-view Geometry

   He Chen, Pengfei Guo, Pengfei Li, and 2 more authors

   In Computer Vision – ECCV 2020, Jun 2020

   Abs HTML PDF

   Epipolar constraints are at the core of feature matching and depth estimation in current multi-person multi-camera 3D human pose estimation methods. Despite the satisfactory performance of this formulation in sparser crowd scenes, its effectiveness is frequently challenged under denser crowd circumstances mainly due to two sources of ambiguity. The first is the mismatch of human joints resulting from the simple cues provided by the Euclidean distances between joints and epipolar lines. The second is the lack of robustness from the naive formulation of the problem as a least squares minimization. In this paper, we depart from the multi-person 3D pose estimation formulation, and instead reformulate it as crowd pose estimation. Our method consists of two key components: a graph model for fast cross-view matching, and a maximum a posteriori (MAP) estimator for the reconstruction of the 3D human poses. We demonstrate the effectiveness and superiority of our proposed method on four benchmark datasets. Our code is available at: https://github.com/HeCraneChen/3D-Crowd-Pose-Estimation-Based-on-MVG.

2018

1. VTC

   Feature Extracted DOA Estimation Algorithm Using Acoustic Array for Drone Surveillance

   Xianyu Chang , Chaoqun Yang, Xiufang Shi, and 3 more authors

   In 2018 IEEE 87th Vehicular Technology Conference (VTC Spring), Jun 2018

   HTML PDF