public void GetZScore_Delta100_0Dot64()
{
var act = Elo.GetZScore(1600, 1500);
var exp = 0.64;
Assert.AreEqual(exp, act, 0.001);
}
public void Calculate(Vote vote, double k)
{
lookup.TryGetValue(vote.Left, out Rank l);
lookup.TryGetValue(vote.Right, out Rank r);
if (l == null)
{
if (r != null)
{
r.Rating += vote.Score > 0.5 ? -k : k / 10;
}
return;
}
if (r == null)
{
l.Rating += vote.Score < 0.5 ? -k : k / 10;
return;
}
var z = Elo.GetZScore(l.Rating, r.Rating);
l.Rating += k * vote.Total * (vote.Score - z);
r.Rating += k * vote.Total * (z - vote.Score);
}
public void Process(ConcurrentQueue <BattlePairing> results)
{
var ids = new List <int>();
lock (locker)
{
BattlePairing pairing;
while (results.TryDequeue(out pairing))
{
var bot0 = pairing.Bot0;
var bot1 = pairing.Bot1;
var result = pairing.Result;
bot0.Stats.Update(result);
bot1.Stats.Update(result.Mirror());
var elo0 = bot0.Elo;
var elo1 = bot1.Elo;
var z0 = Elo.GetZScore(elo0, elo1);
var z1 = Elo.GetZScore(elo1, elo0);
switch (result.Outcome)
{
case BattleSimulation.Outcome.Win:
elo0 = bot0.Elo + (1.0 - z0) * bot0.K;
elo1 = bot1.Elo + (0.0 - z1) * bot1.K;
break;
case BattleSimulation.Outcome.Draw:
elo0 = bot0.Elo + (0.5 - z0) * bot0.K;
elo1 = bot1.Elo + (0.5 - z1) * bot1.K;
break;
case BattleSimulation.Outcome.Loss:
elo0 = bot0.Elo + (0.0 - z0) * bot0.K;
elo1 = bot1.Elo + (1.0 - z1) * bot1.K;
break;
}
bot0.Elo = elo0;
bot1.Elo = elo1;
if (bot0.IsStable || bot1.IsStable)
{
bot0.UpdateK();
bot1.UpdateK();
}
}
var avg = AverageElo;
var dif = avg - AppConfig.Data.EloInitial;
foreach (var bot in Values)
{
bot.Elo -= dif;
}
// Add elo's that are to low too.
ids = ByElo()
.Skip(2)
.Where(item => !item.Locked && item.Elo < Bottom)
.Select(item => item.Id)
.ToList();
}
foreach (var id in ids)
{
BotData bot;
TryRemove(id, out bot);
}
}
