//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void solverTest()
public virtual void solverTest()
{
double[] w = new double[] { 0.01, 0.5, 0.3, 0.19 };
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int n = w.length;
int n = w.Length;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final SumToOne trans = new SumToOne(n);
SumToOne trans = new SumToOne(n);
System.Func <DoubleArray, DoubleArray> func = (DoubleArray theta) =>
{
return(trans.transform(theta));
};
DoubleArray sigma = DoubleArray.filled(n, 1e-4);
DoubleArray start = DoubleArray.filled(n - 1, 0.8);
LeastSquareResults res = SOLVER.solve(DoubleArray.copyOf(w), sigma, func, start);
assertEquals("chi sqr", 0.0, res.ChiSq, 1e-9);
double[] fit = res.FitParameters.toArray();
double[] expected = trans.inverseTransform(w);
for (int i = 0; i < n - 1; i++)
{
//put the fit result back in the range 0 - pi/2
double x = fit[i];
if (x < 0)
{
x = -x;
}
if (x > Math.PI / 2)
{
int p = (int)(x / Math.PI);
x -= p * Math.PI;
if (x > Math.PI / 2)
{
x = -x + Math.PI;
}
}
assertEquals(expected[i], x, 1e-9);
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void inverseTransformTest()
public virtual void inverseTransformTest()
{
for (int n = 2; n < 13; n++)
{
double[] theta = new double[n - 1];
for (int j = 0; j < n - 1; j++)
{
theta[j] = RANDOM.NextDouble() * Math.PI / 2;
}
SumToOne trans = new SumToOne(n);
DoubleArray w = trans.transform(DoubleArray.copyOf(theta));
DoubleArray theta2 = trans.inverseTransform(w);
for (int j = 0; j < n - 1; j++)
{
assertEquals("element " + j + ", of vector length " + n, theta[j], theta2.get(j), 1e-9);
}
}
}
