Removed NelderMeadSimplexTests.FindParableConstantsThatMinimizesErrors() since it only passed due to new SystemRandom() being called in close succession which leads to identical seeds.

src/UnitTests/OptimizationTests/NelderMeadSimplexTests.cs

@@ -4,7 +4,7 @@
 // http://github.com/mathnet/mathnet-numerics
 // http://mathnetnumerics.codeplex.com
 //
-// Copyright (c) 2009-2015 Math.NET
+// Copyright (c) 2009-2016 Math.NET
 //
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
@@ -28,54 +28,16 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
+using MathNet.Numerics.LinearAlgebra.Double;
+using MathNet.Numerics.Optimization;
 using NUnit.Framework;
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using MathNet.Numerics.Optimization;
-using MathNet.Numerics.LinearAlgebra.Double;
 
 namespace MathNet.Numerics.UnitTests.OptimizationTests
 {
     [TestFixture]
     public class NelderMeadSimplexTests
     {
-        /// <summary>
-        /// Test that finds the constants of a parable, function adds noise and return the mean square error
-        /// Copied from the test in https://code.google.com/p/nelder-mead-simplex/
-        /// </summary>
-        [Test]
-        public void FindParableConstantsThatMinimizesErrors()
-        {
-            var nms = new NelderMeadSimplex(1e-6, 1000);
-            double a = 5;
-            double b = 10;
-            System.Random r = new System.Random(2);
-            IObjectiveFunction objFun = ObjectiveFunction.Value((constants)=>
-            {
-                double ssq = 0;
-                for (double x = -10; x < 10; x += .1)
-                {
-                    double yTrue = a * x * x + b * x + r.NextDouble();
-                    double yRegress = constants[0] * x * x + constants[1] * x;
-                    ssq += Math.Pow((yTrue - yRegress), 2);
-                }
-                return ssq;
-            });
-            var initialGuess = new DenseVector(2);
-            initialGuess[0] = 3;
-            initialGuess[1] = 5;
-            var result = nms.FindMinimum(objFun, initialGuess);
-
-            Assert.NotNull(result);
-            Assert.NotNull(result.MinimizingPoint);
-            Assert.NotNull(result.FunctionInfoAtMinimum);
-            Assert.That(Math.Abs(result.MinimizingPoint[0] - a), Is.LessThan(1e-2));
-            Assert.That(Math.Abs(result.MinimizingPoint[1] - b), Is.LessThan(1e-2));
-        }
-
         [Test]
         public void NMS_FindMinimum_Rosenbrock_Easy()
         {