/*
* Do the rating calculation for each player the number of times specified
*/
public async Task <Dictionary <int, Player> > DoCalculation(int count, Dictionary <int, Player> players, RatingRule rule, Dictionary <int, List <Result> > playerResults)
{
for (int i = 0; i < count; i++)
{
await LogStatus($"Running calculations - Iteration {i + 1}");
foreach (var player in players.Values)
{
// update progress counters
int playerId = player.Id; //Get Player ID
ArrayList results = GetRatingResults(player, players, playerResults[playerId], rule); //Get the results of the player's matches
RatingInfo rating = new RatingInfo();
if (results != null && results.Count > 0) // skip player if they have no results
{
rating = CalculatePlayerUTR(player, results, players, rule);
}
else //No recent result case, this needs to be improved to place players in an inactive & currated state
{
rating.Rating = (float)player.Stats.Rating;
rating.Reliability = 0;
}
player.Stats.ActualRating = Math.Truncate(rating.Rating * 100) / 100; // store actual value, even for benchmarks
player.Stats.RatingReliability = rating.Reliability;
player.Stats.SubRating = rating.SubRating;
player.Stats.Rating = rating.Rating;
player.Stats.Reliability = rating.Reliability;
}
}
return(players);
}
public RatingInfo CalculatePlayerUTR(Player player, ArrayList results, Dictionary <int, Player> playerRepo, RatingRule rule)
{
RatingInfo playerUTR = new RatingInfo(); // store player's UTR and reliability
ArrayList resultRatingInfoList = new ArrayList(); // stores the RatingInfo for each match
var activeResultsIds = new List <int>();
float SumRatingXReliability = 0;
float SumReliabilityRating = 0;
float SumReliabilityPlayerReliability = 0;
//stores unique opponent IDs and number of times played
Dictionary <int, int> opponentsMatchFrequency = CalculateMatchFrequencyReliability(player.Id, results);
foreach (Result r in results)
{
// Calculate Dynamcic Rating and Match Result Reliability Factor for each match, store in list
var ri = DoResultsCalculation(player, r, results, playerRepo, rule, opponentsMatchFrequency);
resultRatingInfoList.Add(ri);
if (ri.weightingFactors.MatchWeight >= rule.eligibleResultsWeightThreshold)
{
activeResultsIds.Add(r.Id);
}
}
// Store active results used in calculation
player.Stats.ActiveSinglesResults = JsonConvert.SerializeObject(activeResultsIds.ToArray());
foreach (RatingInfo ri in resultRatingInfoList)
{
SumRatingXReliability += ri.Rating * ri.Reliability; // For each match, Dynmic Ratch x Match Reliability
SumReliabilityRating += ri.Reliability; // Sum of Match Reliabilities
// divide by interpool coefficient so it doesn't skew player reliability
SumReliabilityPlayerReliability += ri.Reliability / ri.weightingFactors.InterpoolCoeffecient;
}
float rating = (SumReliabilityRating == 0.0) ? 0 : (SumRatingXReliability / SumReliabilityRating);
playerUTR.Rating = (float)SmoothRating(rating); // Player rating is these number divided
playerUTR.Rating = (float)Math.Truncate(100 * playerUTR.Rating) / 100;
playerUTR.Reliability = CalculatePlayerReliability(SumReliabilityPlayerReliability, rule);
if (float.IsNaN(playerUTR.Rating))
{
System.Diagnostics.Debug.WriteLine(playerUTR.Rating);
}
if (player.IsTop700())
{
CalculatePlayerSubUTRs(resultRatingInfoList, playerUTR, player.Stats.Id);
}
return(playerUTR);
}
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);
}
public void CalculatePlayerSubUTRs(ArrayList resultRatingInfoList, RatingInfo ratingInfo, int playerRatingId)
{
ratingInfo.SubRating = new SubRating
{
PlayerRatingId = playerRatingId,
ResultCount = resultRatingInfoList.Count
};
ratingInfo.SubRating.HardCourt = CalculatePlayerSurfaceUTR(resultRatingInfoList, SurfaceType.Hard, out int hardCount);
ratingInfo.SubRating.HardCourtCount = hardCount;
ratingInfo.SubRating.ClayCourt = CalculatePlayerSurfaceUTR(resultRatingInfoList, SurfaceType.Clay, out int clayCount);
ratingInfo.SubRating.ClayCourtCount = clayCount;
ratingInfo.SubRating.GrassCourt = CalculatePlayerSurfaceUTR(resultRatingInfoList, SurfaceType.Grass, out int grassCount);
ratingInfo.SubRating.GrassCourtCount = grassCount;
ratingInfo.SubRating.SixWeek = CalculatePlayerTimeUTR(DateTime.Now.AddDays(-42), resultRatingInfoList, out int sixCount);
ratingInfo.SubRating.SixWeekCount = sixCount;
ratingInfo.SubRating.EightWeek = CalculatePlayerTimeUTR(DateTime.Now.AddDays(-56), resultRatingInfoList, out int eightCount);
ratingInfo.SubRating.EightWeekCount = eightCount;
ratingInfo.SubRating.OneMonth = CalculatePlayerTimeUTR(DateTime.Now.AddMonths(-1), resultRatingInfoList, out int oneCount);
ratingInfo.SubRating.OneMonthCount = oneCount;
ratingInfo.SubRating.ThreeMonth = CalculatePlayerTimeUTR(DateTime.Now.AddMonths(-3), resultRatingInfoList, out int threeCount);
ratingInfo.SubRating.ThreeMonthCount = threeCount;
ratingInfo.SubRating.GrandSlamMasters = CalculateAtpMastersUTR(resultRatingInfoList, out int gmCount);
ratingInfo.SubRating.GrandSlamMastersCount = gmCount;
}