Detect & Score: Privacy-Preserving Misbehaviour Detection and Contribution Evaluation in Federated Learning
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Abstract (arXiv)
Federated learning with secure aggregation enables private and collaborative learning from decentralised data without leaking sensitive client information. However, secure aggregation also complicates the detection of malicious client behaviour and the evaluation of individual client contributions to the learning. To address these challenges, QI (Pejo et al.) and FedGT (Xhemrishi et al.) were proposed for contribution evaluation (CE) and misbehaviour detection (MD), respectively. QI, however, lacks adequate MD accuracy due to its reliance on the random selection of clients in each training round, while FedGT lacks the CE ability. In this work, we combine the strengths of QI and FedGT to achieve both robust MD and accurate CE. Our experiments demonstrate superior performance compared to using either method independently.
Key facts. Cited by 1 paper in the map (data through 14 Oct 2026). Builds on 32 of its 48 references that are in the map. First posted on arXiv 30 Jun 2025.
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32 of 48 references.
References · 32
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20 more
- 2022FLamby: Datasets and Benchmarks for Cross-Silo Federated Learning in Realistic Healthcare Settingscited by 125
- 2022The Shapley Value in Machine Learningcited by 98
- 2020Byzantine-Resilient Secure Federated Learningcited by 93
- 2019Measure Contribution of Participants in Federated Learningcited by 79
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- 2019SoK: Differential Privaciescited by 34
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- 2023Label Poisoning is All You Needcited by 29
- 2021Rational Shapley Valuescited by 18
- 2021Transparent Contribution Evaluation for Secure Federated Learning on Blockchaincited by 16
- 2023FedGT: Identification of Malicious Clients in Federated Learning with Secure Aggregationcited by 16
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- 2022Defense Strategies Toward Model Poisoning Attacks in Federated Learning: A Surveycited by 5
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