private void Initialize(int classes, Func <TBinary> initializer)
{
if (classes <= 1)
{
throw new ArgumentException("Number of classes must be higher than 1.", "classes");
}
this.NumberOfOutputs = classes;
this.NumberOfClasses = classes;
int total = (classes * (classes - 1)) / 2;
models = new TBinary[classes - 1][];
indices = new ClassPair[total];
int k = 0;
for (int i = 0; i < Models.Length; i++)
{
models[i] = new TBinary[i + 1];
for (int j = 0; j < models[i].Length; j++)
{
indices[k++] = new ClassPair(i + 1, j);
var model = initializer();
models[i][j] = model;
if (model != null)
{
NumberOfInputs = model.NumberOfInputs;
}
}
}
this.lastDecisionPath = new ThreadLocal <Decision[]>(() => new Decision[NumberOfOutputs - 1]);
this.Track = true;
}
/// <summary>
/// Initializes a new instance of the <see cref="InnerParameters{TBinary, TInput}"/> class.
/// </summary>
///
/// <param name="model">The binary model to be learned.</param>
/// <param name="inputs">The inputs to be used.</param>
/// <param name="outputs">The outputs to be used.</param>
/// <param name="pair">The class labels for the problem to be learned.</param>
///
public InnerParameters(TBinary model, TInput[] inputs, bool[] outputs, ClassPair pair)
{
Model = model;
Inputs = inputs;
Outputs = outputs;
Pair = pair;
}
/// <summary>
/// Initializes a new instance of the <see cref="Decision"/> struct.
/// </summary>
/// <param name="i">The first class index.</param>
/// <param name="j">The second class index.</param>
/// <param name="winner">The class index that won.</param>
public Decision(int i, int j, int winner)
{
if (winner != i && winner != j)
{
throw new ArgumentOutOfRangeException("winner");
}
this.pair = new ClassPair(i, j);
this.winner = winner;
}