Events

Research seminar on “Machine Unlearning in the LLM Era” conducted by Dr Eli Chien, Assistant Professor at National Taiwan University

Date: 24 April 2026 (Friday) Time: 15:00 – 16:00 Venue: CD301, The Hong Kong Polytechnic University Contact person: Dr DU Minxin (minxin.du@polyu.edu.hk)

Research Seminar by Prof. Xingliang Yuan on “Building Post-Deployment Safeguards for Digital Assets” and Dr. Xiaoning Liu on "SIGuard Guarding Secure Inference with Post Data Privacy"

Date: 21 April 2026 (Tuesday) Time: 2:00pm – 4:30pm Venue: DE307, The Hong Kong Polytechnic University Contact person: Prof ZHENG Yifeng (yifeng.zheng@polyu.edu.hk)

Research Seminar on "Study on the Application of Nanocrystalline Magnetic Materials in Wireless Power Transfer Systems" by Dr Chen Chen

You are cordially invited to join our next seminar in hybrid mode on April 17, Friday, 4:30pm (Hong Kong Time).   Zoom Meeting ID:    838 3173 9694 Password:                123456   Study on the Application of Nanocrystalline Magnetic Materials in Wireless Power Transfer Systems Dr Chen Chen, City University of Hong Kong Abstract: Magnetic materials such as ferrite are commonly used in wireless power transfer (WPT) systems to shield flux leakage and enhance coupling between the primary and secondary coils. However, their low saturation flux density often results in large volumes, while their brittle mechanical properties lead to reduced mechanical strength. This work innovatively explores the application of nanocrystalline magnetic materials in WPT systems. Their configurable permeability and flexible structure enable customized designs, particularly for non-planar installation scenarios. The crushed nanocrystalline core exhibits lower core loss than its non-crushed counterpart, with more severe crushing resulting in reduced permeability and loss. Moreover, the square crushing pattern produces more regular flakes and better insulation compared to dot crushing, thereby achieving lower core loss. Furthermore, a novel terrace-shaped nanocrystalline flake ribbon core (T-NFR) is investigated to mitigate non-uniform magnetic flux distribution, which helps achieve relative temperature balance and enhance system stability. Speaker’s Bio: Chen Chen received the B.Eng. and M.Eng. degrees in Mechanical Engineering from Wuhan University of Technology, Wuhan, China, in 2019 and 2022, respectively, and the Ph.D. degree in Electrical Engineering from City University of Hong Kong, Hong Kong SAR, China, in 2026. He is a Postdoctoral Fellow in the Department of Electrical Engineering at the City University of Hong Kong, as well as a member of the State Key Laboratory of Terahertz and Millimeter Waves. His current research interests include wireless power transfer, and applications of nanocrystalline magnetic material in power electronics.   WEBINAR WEBSITE: https://www.ee.cityu.edu.hk/~cccn/ https://www.ee.cityu.edu.hk/~cccn/centre-seminars.htm  

WiEEE Hosts Industry Panel Highlighting Women in Engineering Careers

On April 11th, the Women in Electrical Engineering (WiEEE) Committee hosted an insightful career panel and Q&A session, bringing together industry leaders from CLP, EdKey, MTR Corporation, Microsoft, and beyond. The Department was honored by the presence of Professor C.Y. Chung, Department Head, whose attendance underscored his steadfast commitment to the committee’s mission and his continued support for fostering diversity within the field. The event featured a diverse lineup of speakers sharing professional insights from the engineering, technology, and infrastructure sectors. Key contributors included Mrs. Cherry Li (CRFG-EEB JV) and Mr. Michael Ma (Hong Kong Housing Authority), alongside EdTech Project Manager Ms. Dora Lo and Microsoft Solution Architect Ms. Catherine Li, who brought nearly two decades of software industry expertise to the table. The academic perspective was represented by Prof. Mao Yingling of PolyU’s Department of EEE, while industry voices were further enriched by Ms. Poyi Cheng and Ms. Phoebe Lo from MTR Corporation, and engineers Ms. Alice Loong and Ms. Charmaine Ng from CLP Power.  Ir. Eric Man, Senior Construction Engineer at MTR and Vice Chairman of the PolyU Electrical Engineering Alumni Association, also shared valuable insights. Throughout the session, the panel addressed critical topics such as workplace challenges, career development, and strategies for success as women in engineering. The discussion emphasized resilience, confidence, and the necessity of continuous learning in an evolving landscape.  The event concluded with a special note of gratitude to the speakers, the Organizing Committee, students, and Dr Pauli Lai.   WiEEE remains dedicated to empowering women in STEM through initiatives that foster community, mentorship, and professional growth.

EEE Master of Ceremonies (MC) Training Workshop Series

To empower students with the competence and confidence in public speaking and event hosting as MCs, our Department invited instructor from the English Language Centre (ELC) to deliver a four-session Master of Ceremonies (MC) Training Workshop Series exclusively for EEE undergraduate students. The workshop series, held across March and April 2026, offered an engaging platform for students to develop and sharpen their communication and presentation skills through highly interactive, hands-on activities. Throughout the four sessions, students delved into core techniques of public speaking, stage presence, audience engagement, scriptwriting, and event flow management. Through interactive role‑play scenarios, students honed their ability to deliver openings, manage transitions, and present closing remarks in the role of MCs. With the constructive feedback from the instructor, students were able to recognize their individual strengths and receive clear guidance on areas for improvement. By the conclusion of the workshop, students expressed greater confidence in event hosting and a stronger grasp of the practical skills required for the role of an MC. The series successfully equipped students with essential competencies and professional poise, preparing them for future opportunities in both academic and extracurricular settings. Our Department would like to express our heartfelt gratitude to Mr. Richard CHARLES, the instructor, for his excellent teaching, professional guidance, and unwavering support to our students throughout the workshop series. Our Department would also like to extend our sincere appreciation to Ms. Vivian LI and the ELC for their generous support and seamless coordination, which contributed significantly to the success of the workshops.

Teach Your Mates 2025-26 Semester 2

Beyond traditional lectures, the Department provides an active platform called "Teach Your Mates". This 'Learn by Teaching' program lets students share their ideas and interests, from technical skills to travel and hobbies. In March and April 2026, we held three sessions where five students from different programmes spoke about their favourite topics: C++ Metaprogramming: Unlocking the magic (26 Mar 2026) CHAN Ka Wing (BEng in Electronic & Information Engineering) Explore the World: Nepal and Sri Lanka (31 Mar 2026) PAUDEL Aashriya (BEng in Scheme in Electrical Engineering) Sanuka Rithsanda (BEng in Scheme in Electrical Engineering) AI Painting & Portrait Photography (10 Apr 2026) XIAO Yiqian (BEng in Electrical Engineering with a Secondary Major in AIDA) LEUNG Wai Lim (BEng in Electrical Engineering) The Department would like to thank our speakers for sharing their knowledge and all the students who joined the sessions. We hope to see you at the next one!

Welcome Reception for Freshmen

The Department of Electrical and Electronic Engineering (EEE) successfully hosted its 2026 Welcome Reception for first-year students today. The event served as a vibrant introduction to university life, connecting incoming freshmen with the academic community and the diverse opportunities within the Department. The reception offered a platform for Year 1 students to meet their Academic Advisors, fostering early mentorship and academic guidance. The atmosphere was high-energy as students explored various booths representing student organizations and professional bodies, including: EEC (Electrical Engineering Club) CTF (Capture-the-Flag) WiEEE (Women in Electrical and Electronic Engineering) HKIE (The Hong Kong Institution of Engineers) In addition to academic networking, the event featured inspiring stories from distinguished alumni, giving students a firsthand look at the career trajectories available to EEE graduates. Practical sessions on Study Tours and Service Learning further highlighted the Department’s commitment to holistic development beyond the classroom. The Department extends its sincere gratitude to Prof. Y.L. Chan, Prof. Haibo Hu, and Prof. H.Y. Tam, along with the EEE colleagues, student groups, and supporting staff whose combined efforts made this amazing event possible. We wish all our freshmen an incredible start to their academic journey!  

Seminar on "Sensor Array Signal Processing (SASP): Representative Research Developments and Future Directions" by Prof. Wei Liu, Hong Kong Polytechnic University

You are cordially invited to join our next seminar in online mode on March 27, Friday, 4:30pm (Hong Kong Time).   Zoom Meeting ID:    270 294 7238 Password:                123456   Sensor Array Signal Processing (SASP): Representative Research Developments and Future Directions Prof. Wei Liu, Hong Kong Polytechnic University Abstract: In this talk, a review of the advances made in the past twenty-five years in sensor array signal processing (SASP) is first presented. As it is not possible to give an exhaustive list for all of them, we will focus on five major topics and introduce the corresponding progresses made in tackling their respective technical challenges:  beamforming (including robust adaptive beamforming and frequency invariant beamforming), direction of arrival (DOA) estimation (including sparsity based and underdetermined DOA estimation), sensor location optimization, target/source localization based on sensor arrays, and multiple-input-multiple-output (MIMO) arrays (including MIMO radar and MIMO for wireless communications). The first two are classic SASP topics from the very beginning, while the latter three were only studied systematically in the past decades. Then, six new developments in the SAM area are introduced to give an indication about possible future research directions, including tensor based SASP, quaternion-valued SASP, one-bit and non-coherent SASP, autonomous sensing based on moving arrays, machine learning and artificial intelligence for SASP, and SASP for next-generation communication systems. Speaker’s Bio: Wei Liu received his BSc and LLB degrees from Peking University, China, in 1996 and 1997, respectively, MPhil from the Department of Electrical and Electronic Engineering, University of Hong Kong in 2001, and PhD from the School of Electronics and Computer Science, University of Southampton, UK, in 2003. He then worked as a postdoc first at Southampton and later at Imperial College London. From 2005 to 2023, he was a Lecturer/Senior Lecturer at the Department of Electronic and Electrical Engineering, University of Sheffield, UK and from 2023 to 2024, a Reader at the School of Electronic Engineering and Computer Science, Queen Mary University of London (Visiting Professor from 2024). Since 2024, he has been a Professor at the Department of Electrical and Electronic Engineering, Hong Kong Polytechnic University. He has published 500+ journal and conference papers, six book chapters, and two research monographs titled "Wideband Beamforming: Concepts and Techniques" (Wiley, 2010) and "Low-Cost Smart Antennas" (Wiley, 2019), respectively. His research interests are mainly focused on sensor array and multichannel signal processing and its various applications, such as robotics and autonomous systems, human computer interface, radar, sonar, and wireless communications. He is a member of the Applied Signal Processing Systems Technical Committee (Chair for 2026-2027) of the IEEE Signal Processing Society (SPS), the Digital Signal Processing Technical Committee (Chair for 2022-2024) of the IEEE Circuits and Systems Society, and the IEEE SPS Education Board (2024-2026, Chair of its Educational Conference Program Committee), and a former member of the Sensor Array and Multichannel Signal Processing Technical Committee of the IEEE SPS (Chair for 2021-2022), the IEEE SPS Technical Directions Board (2021-2022, 2026-2027), and the IEEE SPS Conference Board and its Executive Subcommittee (2022-2023). He also acted as an associate editor for IEEE Trans. on Signal Processing, IEEE Access, and Journal of the Franklin Institute, and an Executive Associate Editor-in-Chief of the journal Frontiers of Information Technology and Electronic Engineering; currently he is an associate editor for IEEE Transactions on Circuits and Systems I: Regular Papers and IEEE Antennas and Wireless Propagation Letters. He is an IEEE Distinguished Lecturer for the Aerospace and Electronic Systems Society (2023-2026).   WEBINAR WEBSITE: https://www.ee.cityu.edu.hk/~cccn/ https://www.ee.cityu.edu.hk/~cccn/centre-seminars.htm

Seminar on "A Deployment-Aware Methodology for CSI-Based Wi-Fi Sensing under Limited Labeled Data" by Miss He Wang, Hong Kong Polytechnic University

Date: 20 March 2026, Friday Time: 4:30 pm You are cordially invited to join our next seminar in online mode on March 20, Friday, 4:30pm (Hong Kong Time) Zoom Meeting ID: 383 735 6917 Password: 270831 Speaker: Miss He Wang, Hong Kong Polytechnic University Abstract: CSI-based Wi-Fi sensing enables device-free indoor perception, yet its robustness is fundamentally constrained by the quality of the collected CSI under deployment uncertainty and limited labeled data. This seminar presents a deployment-aware methodology that (i) models wall-reflected dynamic paths to explain how wall proximity can enhance or degrade sensing, (ii) develops a model-guided multi-sensor deployment framework to compare candidate topologies for stationary crowd counting, and (iii) leverages unlabeled CSI via semi-supervised learning and domain adaptation to improve generalization.  Extensive experiments across real-world scenarios validate that robust Wi-Fi sensing requires principled deployment design together with effective utilization of unlabeled data. Speaker’s Bio: He Wang received the B.Eng. degree in Internet of Things Engineering from Beijing University of Technology, China, in 2020, and the M.Sc. degree in Electrical and Electronic Engineering from Imperial College London, London, U.K., in 2021. She is currently pursuing a Ph.D. degree in the Department of Electrical and Electronic Engineering at The Hong Kong Polytechnic University, Hong Kong. Her research interests include wireless sensing, multi-sensor fusion, machine learning, and wireless communications and networking.   WEBINAR WEBSITE: https://www.ee.cityu.edu.hk/~cccn/ https://www.ee.cityu.edu.hk/~cccn/centre-seminars.htm

Seminar on "Coupling and Clustering of Grid-Forming and Grid-Following Converters in Islanded Microgrids" by Dr Jingxi Yang

Date: 13 March 2026, Friday Time: 4:30 pm Venue: Room FYW-3316, City University of Hong Kong Zoom Meeting ID: 859 8869 4437 Password: 123456 Speaker: Dr Jingxi Yang, City University of Hong Kong Abstract: In an islanded microgrid containing a number of grid-forming and grid-following converters (GFMCs and GFLCs), the GFMCs splits into at least two internally synchro- nized clusters under a sufficiently large transient disturbance, and the GFLCs interact with these clusters to manifest diversified behaviors, e.g., being absorbed into one of the aforementioned clusters, or temporarily joining one of the clusters, or forming a new cluster alone. Such behaviors are dependent on the GFLCs’ injected reactive power, network structure and edge weights. These factors can be adjusted to absorb more GFLCs into the dominant cluster of the microgrid. These findings are verified by a modified IEEE 39-bus power grid. Speaker’s Bio: Jingxi Yang (Member, IEEE) received the B.S. and Ph.D. degrees in electrical engineering from Beijing Jiaotong University, Beijing, China, in 2014 and 2020, respectively. He is currently a Research Fellow with the Department of Electrical Engineering, City University of Hong Kong, Hong Kong. His research interests include the complex nonlinear behavior and stability of grid-connected power electronic converter systems. He was the recipient of the Outstanding Reviewer Award of the IEEE Transactions on Power Electronics in 2021 and 2024, and the Excellent Reviewer Award of the Journal of Modern Power Systems and Clean Energy in 2022. He is a member of the IEEE Power and Energy Circuits and Systems Technical Committee.   WEBINAR WEBSITE: https://www.ee.cityu.edu.hk/~cccn/ https://www.ee.cityu.edu.hk/~cccn/centre-seminars.htm