Text this: Optimal mean-variance portfolio selection with mean-field reinforcement learning

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