public RatingInfo.WeightingFactors CalculateMatchResultRelibilityFactor(Player player, Result r, Player opponent, float opponentFrequency, bool againstBenchmark, RatingRule rule)
{
/*
* Match Result Reliabiliy Factor is A x B x C x D
* Where:
* A = Opponent's Player Rating Reliability
* B = Match Format Reliability
* C = Match Frequency Reliability
* D = Match Competitiveness Coeffecient
* E = Benchmark Match Coeffecient
* F = Interpool Match Coeffecient
*/
float a, b, c, d, rr, f;
bool collegeInterpoolApplied = false;
a = (rule.EnableOpponentRatingReliability) ? CalculateOpponentRatingReliability(opponent) : 10.0f;
b = (rule.EnableMatchFormatReliability) ? CalculateMatchFormatReliability(r, rule) : 1.0f;
c = (rule.EnableMatchFrequencyReliability) ? 2 / (opponentFrequency + 1) : 1.0f;
d = (rule.EnableMatchCompetitivenessCoeffecient) ? MatchCompetivenessCalculator.CalculateMatchCompetivenessCoeffecient(player, opponent, r, rule) : 1.0f;
f = (rule.EnableInterpoolCoeffecient) ? CalculateInterpoolCoefficient(player, opponent, rule, out collegeInterpoolApplied) : 1.0f;
rr = a * b * c * d * f;
float coef = 1.0f;
if (againstBenchmark)
{
coef = (rule.EnableBenchmarkMatchCoeffecient) ? rule.BenchmarkMatchCoeffecient : 1.0f;
rr = rr * coef;
}
RatingInfo.WeightingFactors wf = new RatingInfo.WeightingFactors();
wf.MatchFormatReliability = b;
wf.MatchFrequencyReliability = c;
wf.MatchCompetitivenessCoeffecient = d;
wf.BenchmarkMatchCoeffecient = coef;
wf.OpponentRatingReliability = a;
wf.InterpoolCoeffecient = f;
// TESTING: use college interpool as match weight if it is applied
//wf.MatchWeight = collegeInterpoolApplied ? (rule.interpoolCoefficientCollege*10) : (float)Math.Truncate(100000 * rr) / 100000;
wf.MatchWeight = (float)Math.Truncate(100000 * rr) / 100000;
return(wf);
}
public RatingInfo DoResultsCalculation(Player playerInfo, Result r, ArrayList results, Dictionary <int, Player> playerRepo, RatingRule rule, Dictionary <int, int> matchFrequency)
{
RatingInfo ratingInfo = new RatingInfo
{
SurfaceType = r.SurfaceType,
Date = r.ResultDate,
IsMastersOrGrandslam = r.IsMastersOrGrandslam
};
var opponent = playerRepo[GetOpponentId(playerInfo.Id, r)]; //info about opponent
//var opponent = GetOpponent(playerInfo.Id, r, playerRepo);
if (opponent.BenchmarkRating != null && opponent.BenchmarkRating > 0)
{
opponent.Stats.Rating = (double)opponent.BenchmarkRating;
}
ratingInfo.Rating = CalculateDynamicRating(playerInfo, opponent, r, playerRepo, rule);
if (float.IsNaN(ratingInfo.Rating))
{
System.Diagnostics.Debug.WriteLine(ratingInfo.Rating);
}
ratingInfo.AgainstBenchmark = (opponent.Stats.IsBenchmark) ? true : false;
float opponentFrequency = 0;
try
{
opponentFrequency = (float)matchFrequency[opponent.Id]; // value from dictionary
}
catch (Exception e)
{
_logger.LogWarning(e, opponent.Id.ToString());
}
RatingInfo.WeightingFactors wf = CalculateMatchResultRelibilityFactor(playerInfo, r, opponent, opponentFrequency, ratingInfo.AgainstBenchmark, rule);
ratingInfo.Reliability = wf.MatchWeight; //reliability for match
ratingInfo.weightingFactors = wf;
return(ratingInfo);
}