ARTICLE Lu_NW_2024/IDIAP ZooPFL: Exploring Black-box Foundation Models for Personalized Federated Learning Lu, Wang Yu, Hao Wang, Jindong Teney, Damien Wang, Haohan Chen, Yiqiang Yang, Qiang Xie, Xing Ji, Xiangyang IEEE Transactions on Neural Networks and Learning Systems 2025 https://arxiv.org/abs/2310.05143 URL