發送短信 : Averaging plus learning models and their asymptotics

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