@Test
public final void testGradient() {
double[] pos = new double[2];
// dG/dA
for (int i = 0; i < X.length; i++) {
pos[0] = X[i];
pos[1] = Y[i];
assertEquals(
"Bad accuracy for x=" + pos[0] + ", y=" + pos[1] + " in dG/dA value.",
val[i] / params[2],
g.grad(pos, params, 2),
TOLERANCE);
}
// dG/dx0
for (int i = 0; i < X.length; i++) {
pos[0] = X[i];
pos[1] = Y[i];
assertEquals(
"Bad accuracy for x=" + pos[0] + ", y=" + pos[1] + " in dG/dx0 value.",
dgdx0_val[i],
g.grad(pos, params, 0),
TOLERANCE);
}
// dG/dy0
for (int i = 0; i < X.length; i++) {
pos[0] = X[i];
pos[1] = Y[i];
assertEquals(
"Bad accuracy for x=" + pos[0] + ", y=" + pos[1] + " in dG/dy0 value.",
dgdy0_val[i],
g.grad(pos, params, 1),
TOLERANCE);
}
// dG/db
for (int i = 0; i < X.length; i++) {
pos[0] = X[i];
pos[1] = Y[i];
assertEquals(
"Bad accuracy for x=" + pos[0] + ", y=" + pos[1] + " in dG/db value.",
dgdb_val[i],
g.grad(pos, params, 3),
1e2 * TOLERANCE);
}
}
