public void QuadraticCostPrimeTest()
{
var actual = new Matrix(4, 1);
actual.InRandomize();
var expected = new Matrix(4, 1);
expected.InRandomize();
var n = 0;
var da = actual.Duplicate();
for (var i = 0; i < actual.Rows; i++)
{
for (var j = 0; j < actual.Columns; j++)
{
n++;
da[i, j] = Math.Pow(expected[i, j] - actual[i, j], 2);
}
}
var gradMatrix = da * (1.0 / n);
var cost = new QuadraticCostKernel();
var calculatedMatrix = cost.Backward(actual, expected);
Assert.IsTrue(gradMatrix == calculatedMatrix, "Quadratic Cost Derivative successful");
}
public void QuadraticCostTest()
{
var error = 0.0;
var actual = new Matrix(4, 1);
actual.InRandomize();
var expected = new Matrix(4, 1);
expected.InRandomize();
for (var i = 0; i < actual.Rows; i++)
{
for (var j = 0; j < actual.Columns; j++)
{
error += Math.Pow(actual[i, j] - expected[i, j], 2);
}
}
error /= 2;
var cost = new QuadraticCostKernel();
var calculatedError = cost.Forward(actual, expected);
Assert.IsTrue(Math.Abs(error - calculatedError) < 0.01f, "Quadratic Cost successful");
}
