public void LearnTest()
{
Accord.Math.Tools.SetupGenerator(0);
HiddenMarkovModel hmm = new HiddenMarkovModel(new Ergodic(2), 3);
int[] observation = new int[]
{
0,1,1,2,2,1,1,1,0,0,0,0,0,0,0,0,2,2,0,0,1,1,1,2,0,0,
0,0,0,0,1,2,1,1,1,0,2,0,1,0,2,2,2,0,0,2,0,1,2,2,0,1,
1,2,2,2,0,0,1,1,2,2,0,0,2,2,0,0,1,0,1,2,0,0,0,0,2,0,
2,0,1,1,0,1,0,0,0,1,2,1,1,2,0,2,0,2,2,0,0,1
};
int[] observation2 = new int[]
{
0,1,0,0,2,1,1,0,0,2,1,0,1,1,2,0,1,1,1,0,0,2,0,0,2,1,
1,1,2,0,2,2,1,0,1,2,0,2,1,0,2,1,1,2,0,1,0,1,1,0,1,2,
1,0,2,0,1,0,1,2,0,0,2,0,2,0,0,1,0,0,0,0,1,1,2,2,1,2,
0,1,1,1,2,2,1,1,1,2,2,0,2,1,1,2,0,0,1,1,1,1,1,1,1,0,
0,1,0,1,0,1,0,0,2,0,1,0,2,0,0,0,0,1,1,1,1,1,1,0,2,0,
2,2,1,2,1,2,1,0,2,1,1,2,1,2,1,0,0,2,0,0,2,2,2,0,0,1,
0,1,0,1,0,1,0,0,0,0,0,1,1,1,2,0,0,0,0,0,0,2,2,0,0,0,
0,0,1,0,2,2,2,2,2,1,2,0,1,0,1,2,2,1,0,1,1,2,1,1,1,2,
2,2,0,1,1,1,1,2,1,0,1,0,1,1,0,2,2,2,1,1,1,1,0,2,1,0,
2,1,1,1,2,0,0,1,1,1,1,2,1,1,2,0,0,0,0,0,2,2,2,0,1,1,
1,0,1,0,0,0,0,2,2,2,2,0,1,1,0,1,2,1,2,1,1,0,0,0,0,2,
2,1,1,0,1,0,0,0,0,1,0,0,0,2,0,0,0,2,1,2,2,0,0,0,0,0,
0,2,0,0,2,0,0,0,2,0,1,1,2,2,1,2,1,2,0,0,0,0,2,0,2,0,
1,0,0,2,2,1,2,1,2,2,0,1,1,1,0,0,1,1,1,2,1,0,0,2,0,0,
0,0,1,2,0,0,1,2,0,0,0,2,1,1,1,1,1,2,2,0,0,1,1,1,0,0,
2,0,1,1,0,2,2,0,0,0,1,1,1,1,1,1,2,1,1,0,2,0,0,0,1,1,
1,2,1,0,0,0,1,1,0,1,1,1,0,0,0,1,1,1,2,2,2,0,2,0,2,1,
2,1,0,2,1,2,1,0,0,2,1,1,1,1,0,0,0,1,2,0,2,2,1,2,1,1,
1,0,1,0,0,0,0,2,0,1,1,1,0,2,0,1,0,2,1,2,2,0,2,1,0,0,
2,1,2,2,0,2,1,2,1,2,0,0,0,1,2,1,2,2,1,0,0,0,1,1,2,0,
2,1,0,0,0,1,0,0,1,2,0,0,1,2,2,2,0,1,2,0,1,0,1,0,2,2,
0,2,0,1,1,0,1,1,1,2,2,0,0,0,0,0,1,1,0,0,2,0,0,1,0,0,
1,0,2,1,1,1,1,1,2,0,0,2,0,1,2,0,1,1,1,2,0,0,0,1,2,0,
0,0,2,2,1,1,1,0,1,1,0,2,2,0,1,2,2,1,1,1,2,1,0,2,0,0,
1,1,1,1,1,1,2,1,2,1,0,1,0,2,2,0,1,2,1,1,2,1,0,1,2,1
};
var teacher = new ViterbiLearning(hmm)
{
Iterations = 650,
Tolerance = 0
};
double ll = teacher.Run(observation);
double[] pi = { 0.66, 0.33 };
double[,] A =
{
{ 0.99, 0.01 },
{ 0.50, 0.50 }
};
double[,] B =
{
{ 0.44, 0.27, 0.28 },
{ 0.33, 0.33, 0.33 }
};
var hmmA = Matrix.Exp(hmm.Transitions);
var hmmB = Matrix.Exp(hmm.Emissions);
var hmmP = Matrix.Exp(hmm.Probabilities);
Assert.IsTrue(Matrix.IsEqual(A, hmmA, 0.1));
Assert.IsTrue(Matrix.IsEqual(B, hmmB, 0.1));
Assert.IsTrue(Matrix.IsEqual(pi, hmmP, 0.1));
}
