發送短信 : Discovering association rules from structural evolution of tree structured web data

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