Events

Seminar on "Differentially Private Graph Neural Networks for Link Prediction" by Mr Xun Ran

Date: 6 September 2024, Friday Time: 4:30 pm Venue: CD634, The Hong Kong Polytechnic University Zoom Meeting ID: 270 294 7238 Password: 123456 Speaker: Mr Xun Ran, The Hong Kong Polytechnic University   Differentially Private Graph Neural Networks for Link Prediction Mr Xun Ran, The Hong Kong Polytechnic University   Abstract: Graph Neural Networks (GNNs) have proven to be highly effective in addressing the link prediction problem. However, the need for large amounts of user data to learn representations of user interactions raises concerns about data privacy. While differential privacy (DP) techniques have been widely used for node-level tasks in graphs, incorporating DP into GNNs for link prediction is challenging due to data dependency. To this end, in this work we propose a differentially private link prediction (DPLP) framework, building upon subgraph-based GNNs. DPLP includes a DP-compliant subgraph extraction module as its core component. We first propose a neighborhood subgraph extraction method, and carefully analyze its data dependency level. To reduce this dependency, we optimize DPLP by integrating a novel path subgraph extraction method, which alleviates the utility loss in GNNs by reducing the noise sensitivity. Theoretical analysis demonstrates that our approaches achieve a good balance between privacy protection and prediction accuracy, even when using GNNs with few layers. We extensively evaluate our approaches on benchmark datasets and show that they can learn accurate privacy-preserving GNNs and outperforms the existing methods for link prediction.   Speaker’s Bio: Mr Xun RAN is currently pursuing his Ph.D. degree in the Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University, Hong Kong. His research interests include data privacy and neural networks. WEBINAR WEBSITE: http://cccn.ee.cityu.edu.hk/webinar/

EEE Inaugural Banquet

Celebrating the successful merger of the Department of Electrical Engineering and the Department of Electronic and Information Engineering, the Inaugural Banquet of the newly formed Department of Electrical and Electronic Engineering (EEE) was a grand affair, graced by the distinguished presence of PolyU Council Members, Senior Management, Chair Professors, and key executives from leading engineering firms in Hong Kong. The event not only commemorated the rich heritage of both departments but also marked the beginning of a new chapter filled with exciting possibilities and collaborations. Under the guidance of Professor C.Y. Chung, the Head of the EEE Department, attendees were treated to a comprehensive overview of the Department’s educational, research, and knowledge transfer initiatives. The banquet served as a platform to honour former Heads of Department and alumni, acknowledging their contributions to the Department’s legacy. Throughout the evening, guests were captivated by a series of engaging presentations, including a custom-made video depicting the Department’s history, a splendid Chinese painting symbolizing unity and progress, story-sharing between an alumnus and a current student and a delightful musical performance by talented students and a staff member.  The event showcased students’ talents and promising futures as they embarked on their academic and professional paths.

Quantum Hong Kong 2024

Seminar by Prof. Chi-Man Pun on "Image Manipulation Localization with Deep Neural Networks"

Date: 18 July 2024, Thursday Time: 11:00 am Venue: Z505, The Hong Kong Polytechnic University Speaker: Prof. Chi-Man Pun, Department of Computer and Information Science, University of Macau

Seminar on "Artificial Intelligence for Omics-Based Biomedical Research" by Dr Shibiao Wan

Date: 16 July 2024, Tuesday Time: 11:00 am Venue: CD634, The Hong Kong Polytechnic University Speaker: Dr Shibiao Wan, University of Nebraska Medical Center

Seminar on "NOMA Assisted Far-Field and Near-Field Communications" by Prof. Zhiguo Ding

Date: 26 June 2024, Wednesday Time: 11:00 am Venue: Room FJ303, Department of Electrical and Electronic Engineering, PolyU Speaker: Prof. Zhiguo Ding, University of Manchester and Khalifa University

PolyU x NuttyShell Cybersecurity CTF 2024 Prize Presentation Ceremony

The PolyU x NuttyShell Cybersecurity CTF 2024 Prize Presentation Ceremony was successfully held on 29 May 2024, Wednesday, with over 80 participants and honourable guests, including Mr David Cheung, the Assistant Government Chief Information Officer (Cyber Security & Digital Identity) of OGCIO. The event was graced by the presence of Prof. Kwok-yin Wong, Vice President (Education) of PolyU, and Prof. Chi-yung Chung, Head of the EEE Department, making it a truly memorable occasion. As the only institution offering the UGC-funded programme “BSc(Hons) Degree in Information Security” in cybersecurity, PolyU, EEE and NuttyShell team organised the Cybersecurity CTF 2024 contest this year. With over 100 participants joining the contest from different schools and colleges, it is a pleasure to witness the growth of the cybersecurity community and the interests among youngsters in Hong Kong. During the prize ceremony, we received valuable insights on the ever-evolving AI and IT industry. We hope that the event can provide students with a unique experience and foster their passion in cybersecurity.

Seminar on "Research Advances in Microgrids" by Professor Claudio Cañizares

Date: 21 May 2024, Tuesday Time: 10:00am Venue: CF303, The Hong Kong Polytechnic University Speaker: Professor Claudio Cañizares, University of Waterloo

Seminar on "Crystallization kinetics control for highly efficient organic photovoltaics" by Prof. Wei MA

Date: 19 May 2024, Sunday Time: 10:00 am Venue: Room CD634, Department of Electrical and Electronic Engineering, PolyU Speaker: Prof. Wei MA, School of Materials Science and Engineering, Xi’an Jiaotong University

Seminar on "Optical Interconnects for Data Centers " by Dr Kangping Zhong

Date: 17 May 2024, Friday Time: 4:30pm Venue: CD634, The Hong Kong Polytechnic University Zoom Meeting ID: 270 294 7238 Password: 123456 Speaker: Dr Kangping Zhong, The Hong Kong Polytechnic University   Optical Interconnects for Data Centers Dr Kangping Zhong, The Hong Kong Polytechnic University   Abstract:Optical interconnects is one of the key technologies in enabling today’s data center and AI/ML applications. This talk will introduce key technologies enabling optical interconnects up to 1.6Tbit/s, including advances in opto-electronic devices, digital signal processing and packaging. Future technology trends will also be discussed.   Speaker’s Bio:Dr. Zhong Kangping is an Assistant Professor in the Department of Electrical and Electronic Engineering at The Hong Kong Polytechnic University. Dr. Zhong has more than a decade of solid experience in both academia and industry, particularly in the fields of fiber communication systems and associated electronics, optical coherent communications, short reach systems, advanced digital signal processing and its hardware implementation. He is also an expert in optical module, optoelectronic device, silicon photonics, hybrid integrated PIC and high-speed electronic IC, such as CDR chip, TIA, driver and coherent and PAM4 DSP ASIC. Dr. Zhong has published over 100 papers (citation2400+) in top-tier journals and international conferences including one book chapter, three ESI high citation papers (top 1% most-cited paper), one invited talk in the signature conference OFC 2017 and one top scored paper in OFC 2019. He has been ranked among the world’s top 2% most-cited scientists in the released metrics compiled by Stanford University in 2021&2022. He is a recipient of the first prize of Guangdong Technological Invention Award of 2020.   WEBINAR WEBSITE: http://cccn.ee.cityu.edu.hk/webinar/