發送短信 : Hierarchical document representation for summarization

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