public void Analyse()
{
var initialRatings = new List <PlayerRating>();
foreach (var playerInformation in _PlayerData.Values)
{
var rating = new PlayerRating(playerInformation.Identity, InitialRating);
initialRatings.Add(rating);
}
RatingEvaluation bestRatings = EvaluateRatings(initialRatings.ToArray());
for (int i = 0; i < Iterations; i++)
{
var mutatedRatings = GetMutatedRatings(bestRatings.Ratings);
var mutatedRatingEvaluation = EvaluateRatings(mutatedRatings);
if (mutatedRatingEvaluation.Error < bestRatings.Error)
{
bestRatings = mutatedRatingEvaluation;
}
}
Console.WriteLine("Error: {0}", bestRatings.Error);
var ratings = bestRatings.Ratings.OrderByDescending(x => x.Rating);
foreach (var rating in ratings)
{
var playerInformation = _PlayerData[rating.Identity.SteamId];
double?killDeathRatio = null;
if (playerInformation.DeathCount > 0)
{
killDeathRatio = (double)playerInformation.KillCount / playerInformation.DeathCount;
}
Console.WriteLine("{0} ({1}): KDR {2:0.00}, rating {3:0.00}", rating.Identity.Name, rating.Identity.SteamId, killDeathRatio, rating.Rating);
}
PrintEncounterStatistics(ratings);
}
RatingEvaluation EvaluateRatings(PlayerRating[] ratings)
{
double error = 0.0;
foreach (string steamId1 in _PerformanceMatrix.Keys)
{
foreach (string steamId2 in _PerformanceMatrix.Keys)
{
if (steamId1 == steamId2)
{
continue;
}
double rating1 = ratings.Where(x => x.Identity.SteamId == steamId1).First().Rating;
double rating2 = ratings.Where(x => x.Identity.SteamId == steamId2).First().Rating;
double expectedValue = ExpectedWinRatio(rating1, rating2);
var performance = GetPeformanceEntry(steamId1, steamId2);
int totalEncounters = performance.Kills + performance.Deaths;
if (totalEncounters == 0)
{
continue;
}
double actualValue = (double)performance.Kills / totalEncounters;
double errorWeight = Math.Pow(Math.Min((double)totalEncounters / ErrorEvaluationEncounterBarrier, 1.0), 2.0);
error += errorWeight * Math.Pow(expectedValue - actualValue, 2.0);
}
}
var evaluation = new RatingEvaluation(ratings, error);
return(evaluation);
}