發送短信 : Averaging plus learning models and their asymptotics

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