public void SquaredErrorVectorCost_WhenInvalidVectors_ShouldThrowArgument()
{
CostFunction squaredErrorCost = new SquaredErrorCostFunction();
double[] output = new double[] { 0.2, 0.8, 1.2 };
double[] target = new double[] { 0, 0.7 };
double actual = squaredErrorCost.ComputeAverageCost(output, target);
}
public void SquaredErrorVectorCost_ReturnsVectorCost()
{
CostFunction squaredErrorCost = new SquaredErrorCostFunction();
double[] output = new double[] { 0.2, 0.8, 1.2 };
double[] target = new double[] { 0, 0.7, 1.5 };
double expected = 0.0233333333334;
double actual = squaredErrorCost.ComputeAverageCost(output, target);
Assert.AreEqual(expected, actual, 0.0001, "Invalid squared error cost");
}
public void SquaredErrorCost_ReturnsCost()
{
CostFunction squaredErrorCost = new SquaredErrorCostFunction();
double output = 1.2;
double target = 1;
double expected = 0.02;
double actual = squaredErrorCost.ComputeCost(output, target);
Assert.AreEqual(expected, actual, 0.0001, "Invalid squared error cost");
}