發送短信

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

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發送短信 : Threshold variable selection via a L 1 penalty approach