Seminar by Prof. Jinho Choi from the University of Adelaide - Koopman Operator Theory
This talk introduces Koopman operator theory as a framework for analyzing nonlinear dynamical systems using linear representations. Since most real-world systems are nonlinear and difficult to analyze directly, the Koopman approach studies the evolution of observable functions of the system state, allowing the nonlinear dynamics to be represented as a linear operator in a lifted space. This enables the use of powerful linear tools such as eigenvalue analysis to understand system behavior, stability, and long-term evolution. The talk also discusses data-driven techniques, including methods such as dynamic mode decomposition and related approaches, that approximate the Koopman operator from observed data, making the framework practical for modeling and predicting complex time-series systems. Finally, it briefly highlights emerging applications, including the use of Koopman-based representations in areas such as reinforcement learning and modern data-driven modeling of dynamical systems.
Speaker’s Biography: Jinho Choi was born in Seoul, Korea. He received B.E. (magna cum laude) degree in electronics engineering in 1989 from Sogang University, Seoul, and M.S.E. and Ph.D. degrees in electrical engineering from Korea Advanced Institute of Science and Technology (KAIST) in 1991 and 1994, respectively. He is with the School of Electrical and Mechanical Engineering, the University of Adelaide, Australia, as a Professor. His research interests include the Internet of Things (IoT), wireless communications, and statistical signal processing. He authored two books published by Cambridge University Press in 2006 and 2010 and one book by Wiley-IEEE in 2022. Prof. Choi received a number of best paper awards including the 1999 Best Paper Award for Signal Processing from EURASIP. He is a Fellow of the IEEE and has been on the list of World’s Top 2% Scientists by Stanford University since 2020. Currently, he is a Senior Editor of IEEE Wireless Communications Letters and an Associate Editor of IEEE Trans. Mobile Computing. He has also served as a Division Editor of Journal of Communications and Networks (JCN), an Associate Editor or Editor of other journals including IEEE Trans. Communications, IEEE Communications Letters, JCN, IEEE Trans. Vehicular Technology, and ETRI journal.
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- UTS
- Sydney, New South Wales
- Australia
- Room Number: CB10.03.290_Meeting Room
- Starts 07 May 2026 02:00 PM UTC
- Ends 25 May 2026 02:00 PM UTC
- No Admission Charge
Speakers
Jinho Choi was born in Seoul, Korea. He received B.E. (magna cum laude) degree in electronics engineering in 1989 from Sogang University, Seoul, and M.S.E. and Ph.D. degrees in electrical engineering from Korea Advanced Institute of Science and Technology (KAIST) in 1991 and 1994, respectively. He is with the School of Electrical and Mechanical Engineering, the University of Adelaide, Australia, as a Professor. His research interests include the Internet of Things (IoT), wireless communications, and statistical signal processing. He authored two books published by Cambridge University Press in 2006 and 2010 and one book by Wiley-IEEE in 2022. Prof. Choi received a number of best paper awards including the 1999 Best Paper Award for Signal Processing from EURASIP. He is a Fellow of the IEEE and has been on the list of World’s Top 2% Scientists by Stanford University since 2020. Currently, he is a Senior Editor of IEEE Wireless Communications Letters and an Associate Editor of IEEE Trans. Mobile Computing. He has also served as a Division Editor of Journal of Communications and Networks (JCN), an Associate Editor or Editor of other journals including IEEE Trans. Communications, IEEE Communications Letters, JCN, IEEE Trans. Vehicular Technology, and ETRI journal.