public void TestDistanceOneDimension()
{
double[] p1 = new double[1] {
2
};
double[] p2 = new double[1] {
4
};
double expectedDistance = 2;
var dtw = new Dtw();
double distance = dtw.Distance(p1, p2);
Assert.AreEqual(expectedDistance, distance);
}
public void TestSameInput()
{
double[][] signature1 = new double[3][];
//Two dimension points. another test required for one dimension points.
signature1[0] = new double[] { 1, 4 };
signature1[1] = new double[] { 2, 5 };
signature1[2] = new double[] { 3, 8 };
double[][] signature2 = new double[3][];
signature2[0] = new double[] { 1, 4 };
signature2[1] = new double[] { 2, 5 };
signature2[2] = new double[] { 3, 8 };
var dtw = new Dtw();
double cost = dtw.Compute(signature1, signature2);
double expectedCost = 0;
double expectedDistance = 0;
double distance = dtw.Distance(signature1[1], signature2[1]);
Assert.AreEqual(expectedDistance, distance);
Assert.AreEqual(expectedCost, cost);
}
public void TestComputeDifferentLenghtInput() //SameLengthInput already tested in the previous tests.
{
double[][] signature1 = new double[3][];
//Two dimension points. another test required for one dimension points.
signature1[0] = new double[] { 1, 4 };
signature1[1] = new double[] { 2, 5 };
signature1[2] = new double[] { 3, 8 };
double[][] signature2 = new double[4][];
signature2[0] = new double[] { 1, 6 };
signature2[1] = new double[] { 2, 7 };
signature2[2] = new double[] { 3, 10 };
signature2[3] = new double[] { 4, 12 };
var dtw = new Dtw();
double cost = dtw.Compute(signature1, signature2);
double expectedCost = 0.25;
double expectedDistance = 2;
double distance = dtw.Distance(signature1[1], signature2[1]);
Assert.AreEqual(expectedDistance, distance);
Assert.AreEqual(expectedCost, cost);
}