icexelloss commented on issue #45190:
URL: https://github.com/apache/arrow/issues/45190#issuecomment-2578441799

   This looks good to me. One thing I might add is that there are a few 
different favors of percentile rank, e.g.
   
   (1) scale to 1/n+1, 2/n+1, …, n/n+1 (0-1 exclusive)
   (2) scale to 0/n-1, 1/n-1, … n-1/n-1 (0-1 inclusive)
   
   So might be useful to expose the option for the user to choose which one. 
   
   


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