public ScoringResult Calculate(double boardStartingRating, double winnerRating, double loserRating, bool tie = false)
{
//http://en.wikipedia.org/wiki/Elo_rating_system
//http://www.chess-mind.com/en/elo-system
var winnerK = CalculateKFactor(boardStartingRating, winnerRating);
var loserK = CalculateKFactor(boardStartingRating, loserRating);
var eW = 1 / (1 + Math.Pow(10, (loserRating - winnerRating) / F));
var eL = 1 / (1 + Math.Pow(10, (winnerRating - loserRating) / F));
var results = new ScoringResult();
if (!tie)
{
results.WinnerDelta = Math.Round(winnerK * (1 - eW));
results.LoserDelta = Math.Round(loserK * (0 - eL));
}
else
{
results.WinnerDelta = Math.Round(winnerK * (.5 - eW));
results.LoserDelta = Math.Round(loserK * (.5 - eL));
}
return(results);
}
public ScoringResult Calculate(double boardStartingRating, double winnerRating, double loserRating, bool tie = false)
{
//http://en.wikipedia.org/wiki/Elo_rating_system
//http://www.chess-mind.com/en/elo-system
var winnerK = CalculateKFactor(boardStartingRating, winnerRating);
var loserK = CalculateKFactor(boardStartingRating, loserRating);
var eW = 1 / (1 + Math.Pow(10,(loserRating - winnerRating)/F));
var eL = 1 / (1 + Math.Pow(10,(winnerRating - loserRating)/F));
var results = new ScoringResult();
if (!tie)
{
results.WinnerDelta = Math.Round(winnerK * (1 - eW));
results.LoserDelta = Math.Round(loserK * (0 - eL));
}
else
{
results.WinnerDelta = Math.Round(winnerK * (.5 - eW));
results.LoserDelta = Math.Round(loserK * (.5 - eL));
}
return (results);
}
