User profiles for Ka-Ho Chow
![]() | Ka-Ho ChowThe University of Hong Kong Verified email at cs.hku.hk Cited by 1916 |
LDP-Fed: Federated learning with local differential privacy
This paper presents LDP-Fed, a novel federated learning system with a formal privacy guarantee
using local differential privacy (LDP). Existing LDP protocols are developed primarily to …
using local differential privacy (LDP). Existing LDP protocols are developed primarily to …
Demystifying learning rate policies for high accuracy training of deep neural networks
Learning Rate (LR) is an important hyper-parameter to tune for effective training of deep
neural networks (DNNs). Even for the baseline of a constant learning rate, it is non-trivial to …
neural networks (DNNs). Even for the baseline of a constant learning rate, it is non-trivial to …
A framework for evaluating gradient leakage attacks in federated learning
Federated learning (FL) is an emerging distributed machine learning framework for collaborative
model training with a network of clients (edge devices). FL offers default client privacy …
model training with a network of clients (edge devices). FL offers default client privacy …
A framework for evaluating client privacy leakages in federated learning
Federated learning (FL) is an emerging distributed machine learning framework for collaborative
model training with a network of clients (edge devices). FL offers default client privacy …
model training with a network of clients (edge devices). FL offers default client privacy …
Adversarial objectness gradient attacks in real-time object detection systems
Real-time object detection is one of the key applications of deep neural networks (DNNs) for
real-world mission-critical systems. While DNN-powered object detection systems celebrate …
real-world mission-critical systems. While DNN-powered object detection systems celebrate …
Lockdown: backdoor defense for federated learning with isolated subspace training
Federated learning (FL) is vulnerable to backdoor attacks due to its distributed computing
nature. Existing defense solution usually requires larger amount of computation in either the …
nature. Existing defense solution usually requires larger amount of computation in either the …
Structures of a non-ribosomal peptide synthetase condensation domain suggest the basis of substrate selectivity
…, JA Kaczmarski, A Gavriilidou, KH Chow… - Nature …, 2021 - nature.com
Non-ribosomal peptide synthetases are important enzymes for the assembly of complex
peptide natural products. Within these multi-modular assembly lines, condensation domains …
peptide natural products. Within these multi-modular assembly lines, condensation domains …
Impact of information technology on the performance of logistics industry: the case of Hong Kong and Pearl Delta region
…, A Gunasekaran, HY Lam, KH Chow… - Journal of the …, 2014 - Taylor & Francis
Over the last decade, a number of research studies have advocated the use of information
technology (IT) in different aspects of logistics and distribution operations. This study …
technology (IT) in different aspects of logistics and distribution operations. This study …
Deep neural network ensembles against deception: Ensemble diversity, accuracy and robustness
Ensemble learning is a methodology that integrates multiple DNN learners for improving
prediction performance of individual learners. Diversity is greater when the errors of the …
prediction performance of individual learners. Diversity is greater when the errors of the …
Ocr hinders rag: Evaluating the cascading impact of ocr on retrieval-augmented generation
Retrieval-augmented Generation (RAG) enhances Large Language Models (LLMs) by
integrating external knowledge to reduce hallucinations and incorporate up-to-date information …
integrating external knowledge to reduce hallucinations and incorporate up-to-date information …