“…In recent years, the use of distributed methods (such as transfer learning and federated learning) in ML has been considered due to the common challenges in centralized methods [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91], [92], [83], [93], [94], [95], [110], [111], [112], [113], [114], [115], [116], [117], [118], [136] ✓ ✓ ---- [96], [97], [98], [99], [100], [103], [104], [105], [123], [124], [135] [107], [108], [109], [126], [127], [128], [35], [129], [130] such as centralization, security, privacy, and time and computational complexity. In distributed methods, a ML mode...…”