Accord.Tests.Math.NelderMeadTest.SubspaceTest1 C# (CSharp) Method

        public void SubspaceTest1()
        {
            var function = new NonlinearObjectiveFunction(5, x =>
                10.0 * Math.Pow(x[0] * x[0] - x[1], 2.0) + Math.Pow(1.0 + x[0], 2.0));

            NelderMead solver = new NelderMead(function);

            solver.NumberOfVariables = 2;

            Assert.IsTrue(solver.Minimize());
            double minimum = solver.Value;
            double[] solution = solver.Solution;

            Assert.AreEqual(5, solution.Length);
            Assert.AreEqual(-0, minimum, 1e-6);
            Assert.AreEqual(-1, solution[0], 1e-3);
            Assert.AreEqual(+1, solution[1], 1e-3);

            double expectedMinimum = function.Function(solver.Solution);
            Assert.AreEqual(expectedMinimum, minimum);
        }