mamer_rating mamer rating formula -------------------- Pre_tourney stats: pre_wins pre_draws pre_losses pre_rating - this is what we have to initialize From the tourney just completed: tourn_wins, tourn_draws, tourn_losses Post tourney stats: stuff that is saved. post_wins, post_draws, post_losses, post_rating Calculations: tourn_expect = sigma(over all rounds) {1/[1+10^(delta/400)]} delta = player_FICS_rating - opponent_FICS_rating pre_expect = (pre_wins + 0.5*pre_draws)/pre_rating post_wins = pre_wins + tourn_wins post_draws = pre_draws + tourn_draws post_losses = pre_losses + tourn_losses post_rating = (post_wins + 0.5*post_draws)/(pre_expect + tourn_expect) Comments: ---------------- Ratings will tend to be near 1.0, and a typical range is 0.5 to 1.5. Ratings are initialized based on your win percentage. Questions, comments, suggestions?? contact mlong. [Last modified: August 19, 1998 -- fpawn & mlong]