private static double[] finiteDifferences(double[][] input, double[] output, bool stochastic)
{
var regression = new LogisticRegression(inputs: 2);
var diff = new FiniteDifferences(3);
diff.Function = (x) =>
{
for (int i = 0; i < x.Length; i++)
{
regression.SetCoefficient(i, x[i]);
}
return(regression.GetLogLikelihood(input, output));
};
return(diff.Compute(regression.Coefficients));
}