Text this: Safe level graph for majority under-sampling techniques

  ______    _____     ______     ___      ____    
 /_   _//  |  ___||  /_____//   / _ \\   |  _ \\  
 `-| |,-   | ||__    `____ `   / //\ \\  | |_| || 
   | ||    | ||__    /___//   |  ___  || | .  //  
   |_||    |_____||  `__ `    |_||  |_|| |_|\_\\  
   `-`'    `-----`   /_//     `-`   `-`  `-` --`  
                     `-`