the r-dot ratings algorithm

The r-dot algorithm was developed with one thing in mind: to put people in order. It's not perfect, but it has some nice attributes that we like, namely:

  • ratings are from 0.0 to 1.0;
  • the average rating in a group is 0.5;
  • all ratings are updated after every result;
  • if you win, your rating goes up; and,
  • if you lose, your rating goes down.


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