Seminarium: "The Scalability Trap: How Grounding Disrupts Expander Networks"
- Datum
- 27 juni 2025, kl. 13.15–14.00
- Plats
- Ångströmlaboratoriet, Theatrum Visuale, rum 100155
- Typ
- Seminarium
- Föreläsare
- Yamin Yan
- Arrangör
- Institutionen för informationsteknologi: avdelningen för systemteknik
- Kontaktperson
- Ville Kjellqvist
Välkommen till ett seminarium arrangerat av avdelningen för systemteknik. Seminariet hålls på engelska.
Abstract (på engelska): This research examines the impact of disruption through grounding in discrete-time consensus networks. Grounding refers to a phenomenon in which a subset of agents in a network cease to respond to inputs from other agents, potentially altering their dynamics. These grounded agents, which can be leaders or stubborn agents, may experience grounding due to internal faults, safety protocols, external malicious attacks, or deliberate design considerations. In this talk, we explore the impact of grounding on expander graph families, which are known for their favourable scaling properties as the network size increases. It is shown that the algebraic connectivity and eigenratio of the network decrease due to the grounding, causing the performance and scalability of the network to deteriorate, even to the point of losing consensusability. Our findings are supported by both mathematical proofs and numerical simulations.
Bio (på engelska): Dr. Yamin YAN is currently a Senior Lecturer at the School of Electrical and Electronic Engineering, Nanyang Technological University (NTU), Singapore. Before joining NTU, she was a Research Assistant Professor in the Department of Electronic and Computer Engineering and the CKS Robotics Institute at the Hong Kong University of Science and Technology (HKUST), Hong Kong, from 2021 to 2023. During 2021 to 2024, she served as an Adjunct Lecturer at the University of Newcastle (UoN), Australia, and worked as a research associate at the UoN from 2018 to 2021.
She received the B. Eng. degree from Wuyuzhang Honors College in Automation, Sichuan University, Chengdu, China, in 2013, and the Ph.D. degree from the Department of Mechanical and Automation Engineering, the Chinese University of Hong Kong (CUHK), Hong Kong, in 2017. Her research interests include networked systems and control, cyber-physical systems, security control, and their applications.
Dr. Yan was a Best Paper Finalist at the 2024 IEEE International Conference on Control and Automation (ICCA) in Reykjavik, Iceland; an awarded ‘Future Digileader’ 2023 by Digital Futures in Stockholm, Sweden; and a shortlisted candidate for the 2022 Asian Deans' Forum: The Rising Stars - Women in Engineering, in Sydney, Australia. She has served as an Associate Editor for the IEEE Control Systems Society Conference Editorial Board since 2023.