Created
October 18, 2012 15:56
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Simple function to calculate elo ranking of a non drawing game
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| def elo_ranking(winners_rank, losers_rank, k=20): | |
| expected_winner = 1 / (1 + 10 ** ((losers_rank - winners_rank) / 400)) | |
| expected_loser = 1 / (1 + 10 ** ((winners_rank - losers_rank) / 400)) | |
| winners_rank += k * (1 - expected_winner) | |
| losers_rank += k * (0 - expected_loser) | |
| return winners_rank, losers_rank |
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