Accord.Tests.Statistics.NewtonRaphsonCoxLearningTest.RunTest4 C# (CSharp) 메소드

        public void RunTest4()
        {
            // Data from: http://www.sph.emory.edu/~cdckms/CoxPH/prophaz2.html
            // with added tied times

            double[,] data =
            {
                { 50,  1, 1 },
                { 60,  1, 1 },
                { 40,  1, 1 },
                { 51,  1, 1 },
                { 70,  2, 1 },
                { 45,  3, 0 },
                { 35,  5, 0 },
                { 62,  7, 1 },
                { 50, 11, 0 },
                { 45,  4, 0 },
                { 57,  6, 0 },
                { 32,  8, 0 },
                { 57,  9, 1 },
                { 60, 10, 1 },
            };

            var regression = new ProportionalHazards(1);

            double[][] inputs = data.GetColumn(0).ToJagged();
            double[] time = data.GetColumn(1);
            int[] output = data.GetColumn(2).ToInt32();

            var target = new ProportionalHazardsNewtonRaphson(regression);

            double error = target.Run(inputs, time, output);

            double log = -2 * regression.GetPartialLogLikelihood(inputs, time, output);


            Assert.AreEqual(0.04863, regression.Coefficients[0], 1e-4);
            Assert.IsFalse(Double.IsNaN(regression.Coefficients[0]));

            Assert.AreEqual(0.04186, regression.StandardErrors[0], 1e-4);
            Assert.IsFalse(Double.IsNaN(regression.StandardErrors[0]));
        }