Paper Detail

QFedAgent: Quantum-Enhanced Personalized Federated Learning for Multi-Agent Activity Recognition

Quoc Bao Phan, Tuy Tan Nguyen

arxiv Score 11.1

Published 2026-07-02 · First seen 2026-07-03

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Abstract

Federated learning (FL) enables collaborative model training across distributed devices without sharing raw data, making it suitable for privacy-sensitive robotic sensing applications. However, multi-agent systems generate heterogeneous and non-independent and identically distributed (non-IID) multimodal sensor streams that degrade conventional FL algorithms, while classical fusion modules introduce substantial parameter overhead and communication cost. This paper proposes QFedAgent, a hybrid quantum-classical personalized FL framework for multi-agent activity recognition. The approach integrates a variational quantum circuit fusion module that models accelerometer--gyroscope interactions through quantum state encoding and entanglement, requiring only 72 quantum rotation parameters versus 33K in classical multi-layer perceptron-based fusion, achieving approximately 10x total parameter reduction. Experiments on the OPPORTUNITY dataset under subject-based non-IID partitions demonstrate 97.7% mean test accuracy, confirming that parameter-efficient quantum fusion remains competitive with conventional federated baselines.

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BibTeX

@article{phan2026qfedagent,
  title = {QFedAgent: Quantum-Enhanced Personalized Federated Learning for Multi-Agent Activity Recognition},
  author = {Quoc Bao Phan and Tuy Tan Nguyen},
  year = {2026},
  abstract = {Federated learning (FL) enables collaborative model training across distributed devices without sharing raw data, making it suitable for privacy-sensitive robotic sensing applications. However, multi-agent systems generate heterogeneous and non-independent and identically distributed (non-IID) multimodal sensor streams that degrade conventional FL algorithms, while classical fusion modules introduce substantial parameter overhead and communication cost. This paper proposes QFedAgent, a hybrid qu},
  url = {https://arxiv.org/abs/2607.02426},
  keywords = {cs.LG, cs.AI},
  eprint = {2607.02426},
  archiveprefix = {arXiv},
}

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