Accord.Tests.Statistics.Models.Fields.IndependentForwardBackwardAlgorithmTest.LogBackwardTest2 C# (CSharp) Method

        public void LogBackwardTest2()
        {
            double[][][] observations;
            int[] labels;

            var hmm = IndependentMarkovFunctionTest.CreateModel3(out observations, out labels);

            MarkovMultivariateFunction function = new MarkovMultivariateFunction(hmm);


            foreach (double[][] x in observations)
            {
                foreach (int y in labels)
                {
                    double[,] actual = new double[x.Length, 5];
                    Accord.Statistics.Models.Fields.
                        ForwardBackwardAlgorithm.LogBackward(function.Factors[y], x, y, actual);

                    double[,] expected = new double[x.Length, 5];
                    Accord.Statistics.Models.Markov.
                        ForwardBackwardAlgorithm.LogBackward(hmm.Models[y], x, expected);

                    for (int i = 0; i < actual.GetLength(0); i++)
                        for (int j = 0; j < actual.GetLength(1); j++)
                        {
                            Assert.AreEqual(expected[i, j], actual[i, j], 1e-10);
                            Assert.IsFalse(Double.IsNaN(actual[i, j]));
                        }
                }
            }
        }