Contribute correction: KDD CG Selection Vol. 2

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