發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Understanding variations (variant & invariant) of classification tasks/targets