public void KLDTest()
{
var actual = new Matrix(4, 1);
var expected = new Matrix(4, 1);
actual.InRandomize();
expected.InRandomize();
var autoErr = new KLD().Evaluate(actual, expected);
var error = 0.0;
for (var i = 0; i < actual.Rows; i++)
{
for (var j = 0; j < actual.Columns; j++)
{
error += expected[i, j] * Math.Log(expected[i, j] / (actual[i, j] + double.Epsilon));
}
}
error /= actual.Rows * actual.Columns;
Assert.IsTrue(Math.Abs(error - autoErr) < 0.01, new KLD().Type().ToString() + " Forward!");
var autoDErr = new KLD().Backward(actual, expected);
var dErr = (expected * -1).HadamardDivision(actual + actual.Fill(double.Epsilon));
Assert.IsTrue(Math.Abs(dErr.FrobeniusNorm() - autoDErr.FrobeniusNorm()) < 0.01, new KLD().Type().ToString() + " Backward!");
}
public void ShouldSortArray_Three_Elements_Negative()
{
int[] toSort = { -2, -1, -3 };
int[] expected = { -3, -2, -1 };
int[] actual = (int[])toSort.Clone();
selection.Sort(ref actual);
Assert.IsTrue(KLD.AreEqualArrays(expected, actual), $"\nFailed to sort: {KLD.ats(toSort)}.\nExpected: {KLD.ats(expected)} got: {KLD.ats(actual)}");
}
public void ShouldSortArray_Ten_Elements()
{
int[] toSort = { 6, 12, 30, 5, 1, 32, 9, 100, 3, 31 };
int[] expected = { 1, 3, 5, 6, 9, 12, 30, 31, 32, 100 };
int[] actual = (int[])toSort.Clone();
selection.Sort(ref actual);
Assert.IsTrue(KLD.AreEqualArrays(expected, actual), $"\nFailed to sort: {KLD.ats(toSort)}.\nExpected: {KLD.ats(expected)} got: {KLD.ats(actual)}");
}
public void ShouldSortArray_Ten_Elements_Sorted_Reversed()
{
int[] expected = KLD.Generate(10);
int[] toSort = expected.Reverse().ToArray();
int[] actual = (int[])toSort.Clone();
selection.Sort(ref actual);
Assert.IsTrue(KLD.AreEqualArrays(expected, actual), $"\nFailed to sort: {KLD.ats(toSort)}.\nExpected: {KLD.ats(expected)} got: {KLD.ats(actual)}");
}
public void ShouldSortArray_One_Elements()
{
int[] expected = KLD.Generate(3);
int[] toSort = KLD.ShuffleAndClone(expected);
int[] actual = (int[])toSort.Clone();
selection.Sort(ref actual);
Assert.IsTrue(KLD.AreEqualArrays(expected, actual), $"\nFailed to sort: {KLD.ats(toSort)}.\nExpected: {KLD.ats(expected)} got: {KLD.ats(actual)}");
}