Search Results for author: Jianhai Chen

Found 7 papers, 4 papers with code

Blockchain-based Federated Recommendation with Incentive Mechanism

no code implementations3 Sep 2024 Jianhai Chen, Yanlin Wu, Dazhong Rong, Guoyao Yu, Lingqi Jiang, Zhenguang Liu, Peng Zhou, Rui Shen

The experimental results show that our proposed incentive mechanism can attract clients with superior training data to engage in the federal recommendation at a lower cost, which can increase the economic benefit of federal recommendation by 54. 9\% while improve the recommendation performance.

Data Poisoning Recommendation Systems

Clean-image Backdoor Attacks

no code implementations22 Mar 2024 Dazhong Rong, Guoyao Yu, Shuheng Shen, Xinyi Fu, Peng Qian, Jianhai Chen, Qinming He, Xing Fu, Weiqiang Wang

To gather a significant quantity of annotated training data for high-performance image classification models, numerous companies opt to enlist third-party providers to label their unlabeled data.

Fairness Image Classification

CoMeta: Enhancing Meta Embeddings with Collaborative Information in Cold-start Problem of Recommendation

no code implementations14 Mar 2023 Haonan Hu, Dazhong Rong, Jianhai Chen, Qinming He, Zhenguang Liu

Specifically, for a new item: B-EG calculates the similarity-based weighted sum of the ID embeddings of old items as its base embedding; S-EG generates its shift embedding not only with its attribute features but also with the average ID embedding of the users who interacted with it.

Attribute Meta-Learning

Who is Gambling? Finding Cryptocurrency Gamblers Using Multi-modal Retrieval Methods

1 code implementation27 Nov 2022 Zhengjie Huang, Zhenguang Liu, Jianhai Chen, Qinming He, Shuang Wu, Lei Zhu, Meng Wang

Meanwhile, decentralized applications have also attracted intense attention from the online gambling community, with more and more decentralized gambling platforms created through the help of smart contracts.

Retrieval

Demystifying Bitcoin Address Behavior via Graph Neural Networks

1 code implementation26 Nov 2022 Zhengjie Huang, Yunyang Huang, Peng Qian, Jianhai Chen, Qinming He

Finally, we aggregate all graph embeddings of an address into the address-level representation, and engage in a classification model to give the address behavior classification.

Poisoning Deep Learning Based Recommender Model in Federated Learning Scenarios

1 code implementation26 Apr 2022 Dazhong Rong, Qinming He, Jianhai Chen

Various attack methods against recommender systems have been proposed in the past years, and the security issues of recommender systems have drawn considerable attention.

Deep Learning Federated Learning +1

FedRecAttack: Model Poisoning Attack to Federated Recommendation

1 code implementation1 Apr 2022 Dazhong Rong, Shuai Ye, Ruoyan Zhao, Hon Ning Yuen, Jianhai Chen, Qinming He

Experimental results demonstrate that our proposed FedRecAttack achieves the state-of-the-art effectiveness while its side effects are negligible.

Federated Learning Model Poisoning +1

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