Publications

Learning and Control

• A Smoothed Analysis of Online Lasso for the Sparse Linear Contextual Bandits Problem
  Zhiyuan Liu, Huazheng Wang, Bo Waggoner, Youjian(Eugene) Liu and Lijun Chen
  Workshop on Real World Experiment Design and Active Learning at ICML 2020

• Towards Scalable Koopman Operator Learning: Convergence Rates and A Distributed Learning Algorithm
  Zhiyuan Liu, Guohui Ding, Lijun Chen and Enoch Yeung
  in Proceedings of the American Control Conference (ACC), 2020

• Incentivized Exploration for Multi-Armed Bandits under Reward Drift
  Zhiyuan Liu, Huazheng wang, Fan Shen, Kai Liu and Lijun Chen
  in Proceedings of the Thirty-Fourth AAAI Conference on Artificial Intelligence (AAAI), 2020

• Block Belief Propagation for Parameter Learning in Markov Random Fields
  You Lu, Zhiyuan Liu and Bert Huang
  in Proceedings of the Thirty-Third AAAI Conference on Artificial Intelligence (AAAI), 2019

• Decomposition of Nonlinear Dynamical Systems Using Koopman Gramians
  Zhiyuan Liu, Soumya Kundu, Lijun Chen, and Enoch Yeung
  in Proceedings of the American Control Conference (ACC), 2018

• A Nonconvex Relaxation Approach for Rank Minimization Problems
  Xiaowei Zhong, Linli Xu, Yitan Li, Zhiyuan Liu and Enhong Chen
  in Proceedings of the Thirty- AAAI Conference on Artificial Intelligence(AAAI), 2015

Large Scale Network Control

• Multi-Level Optimal Power Flow Solver in Large Distribution Networks
  Xinyang Zhou, Chen Yue, Zhiyuan Liu, Changhong Zhao, Lijun Chen
  IEEE International Conference on Smart Grid Communications (SmartGridComm)
  

• Gradient-Based Multi-Area Distribution System State Estimation
  Xinyang Zhou, Zhiyuan Liu, Yi Guo, Changhong Zhao, Lijun Chen
  IEEE Transactions on Smart Grid (TSG)
  

• Accelerated Voltage Regulation in Multi-Phase Distribution Networks Based on Hierarchi-cal Distributed Algorithm
  Xinyang zhou, Zhiyuan Liu, Changhong Zhao and Lijun Chen
  IEEE Transactions on Power Systems (TPS), 2019

• Reverse and Forward Engineering of Local Voltage Control in Distribution Networks
  Xinyang Zhou, Masoud Farivar, Zhiyuan Liu, Lijun Chen, Steven Low
  IEEE Transactions on Automatic Control (TAC), 2020
  

• Hierarchical Distributed Voltage Regulation in Networked Autonomous Grids
  Xinyang zhou*, Zhiyuan Liu*, Wenbo Wang, Changhong Zhao, Fei Ding and Lijun Chen (equal contribution)
  in Proceedings of the American Control Conference (ACC), 2019

• Signal-Anticipation in Local Voltage Control in Distribution Systems
  Zhiyuan Liu, Seungil You, Xinyang Zhou, Guohui Ding and Lijun Chen
  IEEE Transactions on Smart Grid (TSG), 2019

• A koopman operator approach for computing and balancing gramians for discrete timenonlinear systems
  Enoch Yeung, Zhiyuan Liu and Lijun Chen
  in Proceedings of the American Control Conference (ACC), 2018

• Proportional Control Applied to Dynamic Network Resource Allocation
  Zhiyuan Liu and Lijun Chen
  in Proceedings of the American Control Conference (ACC), 2017

• Stochastic Dual Algorithm for Voltage Regulation in Distribution Networks with DiscreteLoads
  Xinyang Zhou, Zhiyuan Liu, Emiliano Dall’Anese and Lijun Chen
  IEEE International Conference on Smart Grid Communications (SmartGrid), 2017

Under Review and Working Papers

• Learning to Incentivize: Incentivized Exploration under Unknown Reward-Compensation Mapping
  Zhiyuan Liu, Fan Shen, Huazheng Wang, Youjian(Eugene) Liu and Lijun Chen (Working)
  

• Optimal Adversarial Attack on Thompson Sampling
  Zhiyuan Liu, Huazheng Wang, Youjian(Eugene) Liu and Lijun Chen (Ready for submission)
  

• Incentivize Exploration with Information Gap
  Huazheng Wang, Haifeng Xu, Chuanhao Li, Zhiyuan Liu, Hongning Wang (Under Review)