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            ______   __   __     ___     ______   
    ___    /_   _//  \ \\/ //   / _ \\  |      \\ 
   /   ||   -| ||-    \   //   | / \ || |  --  // 
  | [] ||   _| ||_    / . \\   | \_/ || |  --  \\ 
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    -|_||  `-----`   `-`  --`   `---`   `------`  
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發送短信 : PORTFOLIO DIVERSIFICATION WITH THE USE OF RISK PROFILE CLUSTERING: EVIDENCE FROM THE JAPAN NIKKEI 225 INDEX.