public void KappaTest5()
{
// Example from University of York Department of Health Sciences,
// Measurement in Health and Disease, Cohen's Kappa
// http://www-users.york.ac.uk/~mb55/msc/clinimet/week4/kappash2.pdf
// warning: the paper seems to use an outdated variance formula for kappa.
int[,] matrix =
{
{ 61, 2 },
{ 6, 25 },
};
GeneralConfusionMatrix target = new GeneralConfusionMatrix(matrix);
Assert.AreEqual(2, target.Classes);
Assert.AreEqual(94, target.Samples);
Assert.AreEqual(0.801, target.Kappa, 1e-4);
Assert.AreEqual(0.067, target.StandardError, 1e-3);
}