Search Results for author: Zihan Chen

Found 20 papers, 7 papers with code

Adaptive Federated Learning Over the Air

no code implementations11 Mar 2024 Chenhao Wang, Zihan Chen, Nikolaos Pappas, Howard H. Yang, Tony Q. S. Quek, H. Vincent Poor

In contrast, an Adam-like algorithm converges at the $\mathcal{O}( 1/T )$ rate, demonstrating its advantage in expediting the model training process.

Federated Learning

Spectral Co-Distillation for Personalized Federated Learning

1 code implementation NeurIPS 2023 Zihan Chen, Howard H. Yang, Tony Q. S. Quek, Kai Fong Ernest Chong

Personalized federated learning (PFL) has been widely investigated to address the challenge of data heterogeneity, especially when a single generic model is inadequate in satisfying the diverse performance requirements of local clients simultaneously.

Personalized Federated Learning

FedLoGe: Joint Local and Generic Federated Learning under Long-tailed Data

1 code implementation17 Jan 2024 Zikai Xiao, Zihan Chen, Liyinglan Liu, Yang Feng, Jian Wu, Wanlu Liu, Joey Tianyi Zhou, Howard Hao Yang, Zuozhu Liu

Federated Long-Tailed Learning (Fed-LT), a paradigm wherein data collected from decentralized local clients manifests a globally prevalent long-tailed distribution, has garnered considerable attention in recent times.

Personalized Federated Learning Representation Learning

Personalized Federated Learning with Attention-based Client Selection

no code implementations23 Dec 2023 Zihan Chen, Jundong Li, Cong Shen

FedACS integrates an attention mechanism to enhance collaboration among clients with similar data distributions and mitigate the data scarcity issue.

Personalized Federated Learning

The Role of Federated Learning in a Wireless World with Foundation Models

no code implementations6 Oct 2023 Zihan Chen, Howard H. Yang, Y. C. Tay, Kai Fong Ernest Chong, Tony Q. S. Quek

Foundation models (FMs) are general-purpose artificial intelligence (AI) models that have recently enabled multiple brand-new generative AI applications.

Federated Learning

Stand for Something or Fall for Everything: Predict Misinformation Spread with Stance-Aware Graph Neural Networks

no code implementations4 Oct 2023 Zihan Chen, Jingyi Sun, Rong Liu, Feng Mai

Although pervasive spread of misinformation on social media platforms has become a pressing challenge, existing platform interventions have shown limited success in curbing its dissemination.

Misinformation

Modeling Inverse Demand Function with Explainable Dual Neural Networks

no code implementations26 Jul 2023 Zhiyu Cao, Zihan Chen, Prerna Mishra, Hamed Amini, Zachary Feinstein

Financial contagion has been widely recognized as a fundamental risk to the financial system.

Edge Intelligence Over the Air: Two Faces of Interference in Federated Learning

no code implementations17 Jun 2023 Zihan Chen, Howard H. Yang, Tony Q. S. Quek

Federated edge learning is envisioned as the bedrock of enabling intelligence in next-generation wireless networks, but the limited spectral resources often constrain its scalability.

Federated Learning

ChatGPT Informed Graph Neural Network for Stock Movement Prediction

1 code implementation28 May 2023 Zihan Chen, Lei Nico Zheng, Cheng Lu, Jialu Yuan, Di Zhu

However, its potential for inferring dynamic network structures from temporal textual data, specifically financial news, remains an unexplored frontier.

Personalizing Federated Learning with Over-the-Air Computations

no code implementations24 Feb 2023 Zihan Chen, Zeshen Li, Howard H. Yang, Tony Q. S. Quek

Additionally, we leverage a bi-level optimization framework to personalize the federated learning model so as to cope with the data heterogeneity issue.

Federated Learning Privacy Preserving

Imperceptible Adversarial Attack via Invertible Neural Networks

1 code implementation28 Nov 2022 Zihan Chen, Ziyue Wang, JunJie Huang, Wentao Zhao, Xiao Liu, Dejian Guan

Adding perturbations via utilizing auxiliary gradient information or discarding existing details of the benign images are two common approaches for generating adversarial examples.

Adversarial Attack

Semantics-Preserving Sketch Embedding for Face Generation

no code implementations23 Nov 2022 Binxin Yang, Xuejin Chen, Chaoqun Wang, Chi Zhang, Zihan Chen, Xiaoyan Sun

With a semantic feature matching loss for effective semantic supervision, our sketch embedding precisely conveys the semantics in the input sketches to the synthesized images.

Face Generation Image-to-Image Translation

Towards Federated Long-Tailed Learning

no code implementations30 Jun 2022 Zihan Chen, Songshang Liu, Hualiang Wang, Howard H. Yang, Tony Q. S. Quek, Zuozhu Liu

Data privacy and class imbalance are the norm rather than the exception in many machine learning tasks.

Federated Learning

FedCorr: Multi-Stage Federated Learning for Label Noise Correction

1 code implementation CVPR 2022 Jingyi Xu, Zihan Chen, Tony Q. S. Quek, Kai Fong Ernest Chong

Although there exist methods in centralized learning for tackling label noise, such methods do not perform well on heterogeneous label noise in FL settings, due to the typically smaller sizes of client datasets and data privacy requirements in FL.

Federated Learning Privacy Preserving

Optimize Deep Learning Models for Prediction of Gene Mutations Using Unsupervised Clustering

no code implementations31 Mar 2022 Zihan Chen, Xingyu Li, Miaomiao Yang, Hong Zhang, Xu Steven Xu

We showed that unsupervised clustering of image patches could help identify predictive patches, exclude patches lack of predictive information, and therefore improve prediction on gene mutations in all three different cancer types, compared with the WSI based method without selection of image patches and models based on only tumor regions.

Clustering Multiple Instance Learning

Dynamic Attention-based Communication-Efficient Federated Learning

no code implementations12 Aug 2021 Zihan Chen, Kai Fong Ernest Chong, Tony Q. S. Quek

Federated learning (FL) offers a solution to train a global machine learning model while still maintaining data privacy, without needing access to data stored locally at the clients.

Federated Learning

DeepFacePencil: Creating Face Images from Freehand Sketches

1 code implementation31 Aug 2020 Yuhang Li, Xuejin Chen, Binxin Yang, Zihan Chen, Zhihua Cheng, Zheng-Jun Zha

In this paper, we explore the task of generating photo-realistic face images from hand-drawn sketches.

Image-to-Image Translation Translation

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