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

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發送短信 : Heteroscedastic factor analysis