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avitex 2017-11-16 12:45:12 +11:00
parent c96d357812
commit 7d46daf078
1 changed files with 6 additions and 5 deletions
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lib/glicko.ex
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@ -75,7 +75,8 @@ defmodule Glicko do
# Calculation of the estimated variance of the player's rating based on game outcomes # Calculation of the estimated variance of the player's rating based on game outcomes
defp calc_variance_estimate(%{player: player, results: results}) do defp calc_variance_estimate(%{player: player, results: results}) do
Enum.reduce(results, 0.0, fn result, acc -> results
|> Enum.reduce(0.0, fn result, acc ->
tmp_e = calc_e(player, result) tmp_e = calc_e(player, result)
acc + :math.pow(result.opponent_rating_deviation_g, 2) * tmp_e * (1 - tmp_e) acc + :math.pow(result.opponent_rating_deviation_g, 2) * tmp_e * (1 - tmp_e)
end) end)