public void PoissonTest()
{
var actual = new Matrix(4, 1);
var expected = new Matrix(4, 1);
actual.InRandomize();
expected.InRandomize();
var autoErr = new Poisson().Evaluate(actual, expected);
var error = 0.0;
for (var i = 0; i < actual.Rows; i++)
{
for (var j = 0; j < actual.Columns; j++)
{
error += actual[i, j] - expected[i, j] * Math.Log(actual[i, j] + double.Epsilon);
}
}
error /= actual.Rows * actual.Columns;
Assert.IsTrue(Math.Abs(error - autoErr) < 0.01, new Poisson().Type().ToString() + " Forward!");
var autoDErr = new Poisson().Backward(actual, expected);
var dErr = new Matrix(actual.Rows, actual.Columns);
for (var i = 0; i < actual.Rows; i++)
{
for (var j = 0; j < actual.Columns; j++)
{
dErr[i, j] = 1.0 - expected[i, j] / (actual[i, j] + double.Epsilon);
}
}
Assert.IsTrue(Math.Abs(dErr.FrobeniusNorm() - autoDErr.FrobeniusNorm()) < 0.01, new Poisson().Type().ToString() + " Backward!");
}