no code implementations • 24 May 2023 • Wenjian Hao, Zehui Lu, Zihao Liang, Tianyu Zhou, Shaoshuai Mou
This paper develops a policy learning method for tuning a pre-trained policy to adapt to additional tasks without altering the original task.
no code implementations • 24 May 2023 • Wenjian Hao, Paulo C. Heredia, Bowen Huang, Zehui Lu, Zihao Liang, Shaoshuai Mou
This paper proposes a policy learning algorithm based on the Koopman operator theory and policy gradient approach, which seeks to approximate an unknown dynamical system and search for optimal policy simultaneously, using the observations gathered through interaction with the environment.
no code implementations • 31 Mar 2023 • Zihao Liang, Wenjian Hao, Shaoshuai Mou
By assuming the objective function to be learned is parameterized as a linear combination of features with unknown weights, the proposed approach for IOC is able to achieve a Koopman representation of the unknown dynamics and the unknown weights in objective function together.
no code implementations • 12 Oct 2022 • Wenjian Hao, Bowen Huang, Wei Pan, Di wu, Shaoshuai Mou
This paper presents a data-driven approach to approximate the dynamics of a nonlinear time-varying system (NTVS) by a linear time-varying system (LTVS), which is resulted from the Koopman operator and deep neural networks.
no code implementations • 15 Oct 2020 • Yiqiang Han, Wenjian Hao, Umesh Vaidya
The OpenAI Gym environment, employed for Reinforcement Learning-based control design, is used for data generation and learning of Koopman operator in control setting.
no code implementations • 16 Sep 2020 • Wenjian Hao, Rongyao Wang, Alexander Krolicki, Yiqiang Han
Proper path planning is the first step of robust and efficient autonomous navigation for mobile robots.
Robotics Systems and Control Systems and Control
no code implementations • 16 Jun 2020 • Wenjian Hao, Yiqiang Han
From the results of the experiments, we compare these two methods in terms of control strategies and the effectiveness under various initialization conditions.