/// <summary>
/// Samples from the model.
/// </summary>
/// <param name="truth">The truth.</param>
/// <param name="players">The players.</param>
/// <param name="performanceVariance">The performance variance.</param>
/// <param name="drawMargin">The draw margin.</param>
/// <returns>
/// The <see cref="Game" />.
/// </returns>
public static Game Sample(Marginals truth, IList <string> players, double performanceVariance, double drawMargin)
{
double perf1 = new Gaussian(truth.Skills[players[0]].GetMean(), performanceVariance).Sample();
double perf2 = new Gaussian(truth.Skills[players[1]].GetMean(), performanceVariance).Sample();
double diff = perf1 - perf2;
MatchOutcome outcome = diff < drawMargin ? MatchOutcome.Draw : (diff > 0 ? MatchOutcome.Player1Win : MatchOutcome.Player2Win);
return(TwoPlayerGame.CreateGame(Guid.NewGuid().ToString(), players[0], players[1], outcome));
}
/// <summary>
/// Samples from the model.
/// </summary>
/// <param name="truth">The truth.</param>
/// <param name="players">The players.</param>
/// <param name="performanceVariance">The performance variance.</param>
/// <returns>The <see cref="Game"/>.</returns>
public static TwoPlayerGame Sample(Marginals truth, IList <string> players, double performanceVariance)
{
double perf1 = new Gaussian(truth.Skills[players[0]].GetMean(), performanceVariance).Sample();
double perf2 = new Gaussian(truth.Skills[players[1]].GetMean(), performanceVariance).Sample();
return(TwoPlayerGame.CreateGame(
Guid.NewGuid().ToString(),
players[0],
players[1],
perf1 > perf2 ? MatchOutcome.Player1Win : MatchOutcome.Player2Win));
}
/// <summary>
/// Creates the toy inputs.
/// </summary>
/// <param name="matchOutcomes">The match outcomes.</param>
/// <returns>The <see cref="Inputs{TwoPlayerGame}"/>.</returns>
public static Inputs <TwoPlayerGame> CreateToyInputs(IEnumerable <MatchOutcome> matchOutcomes)
{
var inputs = new Inputs <TwoPlayerGame>
{
Mu = 120,
Sigma = 40,
Beta = 5,
Gamma = 1.2,
Games = new KeyedCollectionWithFunc <string, TwoPlayerGame>(ia => ia.Id),
};
inputs.Games.AddRange(matchOutcomes.Select((ia, i) => TwoPlayerGame.CreateGame(i.ToString("N"), Jill, Fred, ia)));
return(inputs);
}