Text this: Optimal feature selection for learning-based algorithms for sentiment classification

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