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    ___    |  ___||   ____     /_   _//     ___   
   /   ||  | ||__    |    \\    -| ||-     /   || 
  | [] ||  | ||__    | [] ||    _| ||_    | [] || 
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    -|_||  `-----`   |_|`-`    `-----`      -|_|| 
     `-`             `-`                     `-`

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Text this: Time-varying beta estimation in CAPM under the regime-switching Model