static LeastSquaresRegressionResultTest()
{
const int n = 100;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[][] x = new double[n][2];
//JAVA TO C# CONVERTER NOTE: The following call to the 'RectangularArrays' helper class reproduces the rectangular array initialization that is automatic in Java:
//ORIGINAL LINE: double[][] x = new double[n][2];
double[][] x = RectangularArrays.ReturnRectangularDoubleArray(n, 2);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] y1 = new double[n];
double[] y1 = new double[n];
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final double[] y2 = new double[n];
double[] y2 = new double[n];
for (int i = 0; i < n; i++)
{
x[i][0] = RANDOM.NextDouble();
x[i][1] = RANDOM.NextDouble();
y1[i] = F1.applyAsDouble(x[i][0], x[i][1]);
y2[i] = F2.applyAsDouble(x[i][0], x[i][1]);
}
NO_INTERCEPT = REGRESSION.regress(x, null, y1, false);
INTERCEPT = REGRESSION.regress(x, null, y2, true);
}
/// <summary>
/// {@inheritDoc}
/// </summary>
public virtual GaussianQuadratureData generate(int n)
{
ArgChecker.isTrue(n > 0);
Pair <DoubleFunction1D, DoubleFunction1D>[] polynomials = LAGUERRE.getPolynomialsAndFirstDerivative(n, _alpha);
Pair <DoubleFunction1D, DoubleFunction1D> pair = polynomials[n];
DoubleFunction1D p1 = polynomials[n - 1].First;
DoubleFunction1D function = pair.First;
DoubleFunction1D derivative = pair.Second;
double[] x = new double[n];
double[] w = new double[n];
double root = 0;
for (int i = 0; i < n; i++)
{
root = ROOT_FINDER.getRoot(function, derivative, getInitialRootGuess(root, i, n, x)).Value;
x[i] = root;
w[i] = -GAMMA_FUNCTION.applyAsDouble(_alpha + n) / CombinatoricsUtils.factorialDouble(n) / (derivative.applyAsDouble(root) * p1.applyAsDouble(root));
}
return(new GaussianQuadratureData(x, w));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void test()
public virtual void test()
{
assertEquals(F.applyAsDouble(SIGMA, T), 0.4560, 1e-4);
}