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Zhu, Hangyu (author), Wang, R. (author), Jin, Yaochu (author), Liang, K. (author)Federated learning (FL) is an emerging privacy preserving machine learning protocol that allows multiple devices to collaboratively train a shared global model without revealing their private local data. Nonparametric models like gradient boosting decision trees (GBDTs) have been commonly used in FL for vertically partitioned data. However,...journal article 2023