@Ignore
@Test(timeout = 5 * 60 * 1000)
public final void testDeJong_big() {
final int dim = 40;
final double bound = 100;
long start = System.currentTimeMillis();
FunctionNEW f = new Function_DeJong_nD(dim);
System.out.println(System.currentTimeMillis() - start);
/*
* 20 40 80 160
* 600 2500 8000 65000
*/
Box area = new Box(dim, new RealInterval(-bound, bound));
solver = new SteepestDescent(f, area);
start = System.currentTimeMillis();
double res = solver.localMinimum(area);
System.out.println(System.currentTimeMillis() - start);
assertTrue(res < 1e-4); // start from 0
area = new Box(dim, new RealInterval(-bound - bound / 2.0, bound - bound / 5.0));
res = solver.localMinimum(area);
assertTrue(res < 1);
area = new Box(dim, new RealInterval(-10, -9)); // bad point...
res = solver.localMinimum(area);
assertTrue(res < 1);
}
// @Ignore
@Test
public final void testDeJong_small() {
final int dim = 2;
final double bound = 100;
FunctionNEW f = new Function_DeJong_nD(dim);
Box area = new Box(dim, new RealInterval(-bound, bound));
solver = new SteepestDescent();
solver.setProblem(f, area);
double res = solver.localMinimum(area);
assertTrue(res < 1e-4); // start from 0
area = new Box(dim, new RealInterval(-bound - 10, bound + 2));
res = solver.localMinimum(area);
assertTrue(res < 1e-4);
}