public void DistanceTest()
{
Sigmoid dense = new Sigmoid(3.6, 1);
SparseSigmoid target = new SparseSigmoid(3.6, 1);
double[] sx = { 1, -0.555556, 2, +0.250000, 3, -0.864407, 4, -0.916667 };
double[] sy = { 1, -0.666667, 2, -0.166667, 3, -0.864407, 4, -0.916667 };
double[] sz = { 1, -0.944444, 3, -0.898305, 4, -0.916667 };
double[] dx = { -0.555556, +0.250000, -0.864407, -0.916667 };
double[] dy = { -0.666667, -0.166667, -0.864407, -0.916667 };
double[] dz = { -0.944444, +0.000000, -0.898305, -0.916667 };
double expected, actual;
expected = dense.Distance(dx, dy);
actual = target.Distance(sx, sy);
Assert.AreEqual(expected, actual);
expected = dense.Distance(dx, dz);
actual = target.Distance(sx, sz);
Assert.AreEqual(expected, actual);
expected = dense.Distance(dy, dz);
actual = target.Distance(sy, sz);
Assert.AreEqual(expected, actual);
}