發送短信 : Device scheduling and assignment in hierarchical federated learning for Internet of Thing

  _  __     ___      ____      ______    ____    
 | |/ //   / _ \\   |  _ \\   /_   _//  |  _ \\  
 | ' //   | / \ ||  | |_| ||   -| ||-   | |_| || 
 | . \\   | \_/ ||  | .  //    _| ||_   | .  //  
 |_|\_\\   \___//   |_|\_\\   /_____//  |_|\_\\  
 `-` --`   `---`    `-` --`   `-----`   `-` --`