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  • Seminar on Automatic Rank Determination for Low-Rank Adaptation via Submodular Function Maximisation

    Seminar on Automatic Rank Determination for Low-Rank Adaptation via Submodular Function Maximisation

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Abstract In this talk, we will introduce SubLoRA, a rank determination method for Low-Rank Adaptation (LoRA) based on submodular function maximisation. In contrast to prior approaches, such as AdaLoRA, that rely on first-order (linearised) approximations of the loss function, SubLoRA utilises second-order information to capture the potentially complex loss landscape by incorporating the Hessian matrix. […]

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    RPG Seminar – Incentive Mechanism Design for Split Federated Learning

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Abstract Split Federated Learning (SFL) combines computational efficiency with privacy preservation, but existing incentive mechanisms assume uniform cut-layer configurations across clients. This seminar presents a novel incentive mechanism that accounts for heterogeneous cut layer selections in SFL systems. We formulate the problem as a Stackelberg game and derive theoretical convergence guarantees. The proposed mechanism provably […]

  • Seminar on Quantum Dot Nanocrystal Based Optoelectronic Devices and Infrared Image Sensors

    Seminar on Quantum Dot Nanocrystal Based Optoelectronic Devices and Infrared Image Sensors

    Tam Wing Fan Innovation Wing Two, G/F, Run Run Shaw Building, The University of Hong Kong

    Abstract Colloidal semiconductor quantum dot nanocrystals (QD NCs) have been shown to be promising materials for electronic and optoelectronic device applications because of their unique size dependent properties and solution processability. We develop a systematic methods to engineer the surface chemistry of quantum dot nanocrystals to control the charge carrier statistics as well as optical […]

  • Seminar on Advanced Solid-State Laser Technology and Its Applications

    Seminar on Advanced Solid-State Laser Technology and Its Applications

    Room CB-601J, 6/F, Chow Yei Ching Building, The University of Hong Kong

    *After the seminar, you are also welcome to attend in-person discussions with the speakers from 11:30 am to 12:30 pm in Room 601J. Abstract Solid-state lasers mean laser systems using solid-state materials as the gain medium, primarily including rod, slab, disc, fiber, and semiconductor lasers. These methods offer advantages such as high output power, excellent […]

  • Seminar on Approaches to Modelling and Analysis of Sustainable Power Networks

    Seminar on Approaches to Modelling and Analysis of Sustainable Power Networks

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Abstract Due to the evident climate change and environmental pressures the future power/energy systems will have to operate, sooner rather than later, in a net-zero environment. This will manifest in a mix of wide range of electricity generation, storage and demand technologies (increasingly power electronics interfaced); blurred boundaries between transmission and distribution system; significantly higher […]

  • Seminar on Distributed Optimisation Frameworks for Large-Scale Nonlinear Programming in Power Systems

    Seminar on Distributed Optimisation Frameworks for Large-Scale Nonlinear Programming in Power Systems

    Tam Wing Fan Innovation Wing Two, G/F, Run Run Shaw Building, The University of Hong Kong

    Abstract The ongoing energy transition is challenging centralised power system paradigms by rapidly integrating distributed energy resources (DERs), which introduce significant supply-demand variability. This variability complicates grid management and necessitates enhanced coordination among operators. Centralised data aggregation further exacerbates privacy risks and strains the communication infrastructure as the proliferation of controllable devices increases. To address […]

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    RPG Seminar – New Paradigm for Universal Graph Prompt Tuning

    Online via Zoom

    Zoom Link: https://hku.zoom.us/j/92120929746?pwd=aL2f7KSR1uAb9rKfYOyaxpOKa9SBQL.1 Abstract We strengthen the theoretical foundation of universal graph prompt tuning by introducing stricter constraints, demonstrating that adding prompts to all nodes is a necessary condition for achieving the universality of graph prompts. To this end, we propose a novel model and paradigm, Learning and Editing Universal GrAph Prompt Tuning (LEAP), which […]

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    RPG Seminar – Category Extrapolation for Long-Tail Learning

    Online via Zoom

    Zoom Link: https://hku.zoom.us/j/98761635562?pwd=7QQk1kgMNRmNcaNcVr3bsVi0A2LbZs.1#success Abstract This paper tackles long-tailed learning where tail classes suffer from poor feature generalization due to limited sample diversity. It makes a key observation—finer-grained datasets are less harmed by class imbalance—and supports it with quantitative and qualitative evidence showing that increasing granularity improves tail-category feature generalization. Motivated by this, the authors propose […]

  • Seminar on AI Methods for Learning Quantum Systems

    Seminar on AI Methods for Learning Quantum Systems

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Abstract As quantum technologies redefine the landscape of modern electronics and communication networks, the efficient characterisation and monitoring of complex quantum systems have become essential. In this talk, I will present AI-driven methods to address the challenges in quantum state learning and property characterisation. First, I will introduce the Generative Query Network for Quantum (GQNQ), […]

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    RPG Seminar – A Hierarchical Predictive Control Approach for Wireless Electric Vehicle Energy Network with Integrated Microgrids Incorporating Degradation Costs

    Online via Zoom

    Zoom Link: https://hku.zoom.us/j/2597624634?omn=91226274349 Abstract Integrating the wireless electric vehicle energy network with microgrids benefits vehicle owners and grid operators. Yet, economical and reliable operations for such combinations under renewable energy uncertainties remain examined. To address this, achieving cost-effective and reliable performance, a novel hierarchical predictive control approach is utilized. Its core innovation schedules optimal power […]

  • Seminar on Exploring the 6G Frontier: Prototyping Key Technologies at Yonsei

    Seminar on Exploring the 6G Frontier: Prototyping Key Technologies at Yonsei

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Abstract This talk will begin with a brief introduction to Yonsei University and then present an overview of its recent research efforts in 6G and cloud-based wireless prototyping. Since 2011, the Yonsei team has pioneered a range of hardware-oriented research topics, including full-duplex radios, millimeter-wave lens MIMO, wireless VR and haptic communications, reconfigurable intelligent surfaces […]

  • Seminar on Cross-Species Functional MRI (fMRI) Investigations of Reinforcement Learning

    Seminar on Cross-Species Functional MRI (fMRI) Investigations of Reinforcement Learning

    Tam Wing Fan Innovation Wing Two, G/F, Run Run Shaw Building, The University of Hong Kong

    Abstract Reinforcement learning in humans depends on distributed neural circuits for value updating and behavioural adaptation. Cross-species comparisons, particularly with macaques, greatly facilitate our understanding of these mechanisms in humans by revealing conserved and evolved elements, but they crucially depend on precise anatomical alignment to identify homologous regions and interpret functional parallels or divergences across […]

  • Seminar on An ECE Framework for Instrumentation and Education: From Microscopy Design to Community Outreach

    Seminar on An ECE Framework for Instrumentation and Education: From Microscopy Design to Community Outreach

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Abstract Advanced electron microscopy, characterised by atomic-scale resolution, is a cornerstone for observing material dynamics. The development of these instruments presents complex engineering challenges in electro-optics and system integration. Dr. Hsueh holding a PhD in Electrical and Computer Engineering, leverages his expertise in electromagnetic waves, waveguides, and imaging theory to drive the development of next-generation […]

  • Seminar on Why Not Electric Vehicle

    Seminar on Why Not Electric Vehicle

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Abstract This seminar will review some Electric Vehicle (EV) system concepts and designs, electric machines and drives for EVs, hybrid powertrains for hybrid EVs, EV energy sources and energy management systems, and EV-to-grid technology. Speaker Ir Dr. T. W. CHING Department of Electrical and Computer Engineering Speaker’s Biography Ir Dr. T. W. CHING received the […]

  • Seminar on Integration of Renewable Energy for Power Restoration: Real-time Digital Simulation Approach

    Seminar on Integration of Renewable Energy for Power Restoration: Real-time Digital Simulation Approach

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Abstract The drive toward aggressive decarbonization goals is rapidly transforming the power grid, highlighted by an increase in renewable energy production. This expansion relies heavily on Distributed Energy Resources (DERs), yet operators face challenges due to the lack of transparency in DER operations. This opacity poses significant risks to grid stability as the growing number […]

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    RPG Seminar – Synthetic Aperture for High Spatial Resolution Acoustoelectric Imaging

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Zoom Link: https://hku.zoom.us/j/97208194193 Abstract Acoustoelectric imaging (AEI) refers to the mapping of electric fields in electrolyte and tissue media by measuring the acoustoelectric (AE) effect. It shows promise for non-invasive electrophysiological mapping down to the resolution of diagnostic ultrasound imaging. AE signals are typically induced by applying focused ultrasound (FUS) waves, which sift out the […]

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    RPG Seminar – LLMs for Social Good: Addressing Data Scarcity and Opacity for Alzheimer’s Diagnosis and Prognosis

    Room CB-603, 6/F, Chow Yei Ching Building, The University of Hong Kong

    Zoom Link: https://hku.zoom.us/j/94842355191?pwd=02bHCUfep3119O1jbeDHbnZNKaKUJ8.1 Abstract Early detection of Alzheimer's Disease (AD) through non-invasive speech analysis offers a highly promising diagnostic avenue. However, the development of robust computational models is severely hindered by the fundamental imperfections of real-world clinical data. Spontaneous patient speech is often noisy and highly variable, while longitudinal clinical records suffer from severe data […]

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    RPG Seminar – Scaling Up Spatial Awareness: High-Fidelity Data Synthesis for 3D Scene Understanding

    Zoom Link: https://hku.zoom.us/j/91627715757?pwd=ByKZvbK3QYx8VSWXVoNGBsZXTpFEz3.1 Abstract Spatial understanding constitutes a fundamental pillar of human-level intelligence, yet its advancement is currently bottlenecked by the scarcity of diverse, high-fidelity 3D data. Existing research predominantly relies on domain-specific or manually annotated datasets, creating a critical void: the absence of a principled, scalable engine capable of synthesizing high-quality spatial data at […]

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    RPG Seminar – Broadband Mamyshev Oscillator at 1.7 μm for Multicolor Three-photon Fluorescence Microscopy

    Zoom Link: https://hku.zoom.us/j/95690107722?pwd=KARbsSPDxqYtCaSbRQ0AbxNFmlyBl2.1 Abstract Three-photon fluorescence (3PF) microscopy enables high-contrast deep-tissue imaging with cellular resolution, especially in 1.7 μm wavelength range, yet its widespread adoption has been hindered by the lack of compact, tunable, and high-power femtosecond laser sources. Here, we demonstrate a broadband tunable ultrafast Mamyshev oscillator operating in the 1.7 μm wavelength region, […]