def test_finite_difference_hess_linear_operator(self): ex = ExVectorialFunction() nfev = 0 njev = 0 nhev = 0 x0 = [1.0, 0.0] v0 = [1.0, 2.0] analit = VectorFunction(ex.fun, x0, ex.jac, ex.hess, None, None, (-np.inf, np.inf), None) nfev += 1 njev += 1 nhev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev, nhev) approx = VectorFunction(ex.fun, x0, ex.jac, '2-point', None, None, (-np.inf, np.inf), None) assert_(isinstance(approx.H, LinearOperator)) for p in ([1.0, 2.0], [3.0, 4.0], [5.0, 2.0]): assert_array_equal(analit.f, approx.f) assert_array_almost_equal(analit.J, approx.J) assert_array_almost_equal(analit.H.dot(p), approx.H.dot(p)) nfev += 1 njev += 4 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev+approx.nhev, nhev) x = [2.0, 1.0] H_analit = analit.hess(x, v0) nhev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev+approx.nhev, nhev) H_approx = approx.hess(x, v0) assert_(isinstance(H_approx, LinearOperator)) for p in ([1.0, 2.0], [3.0, 4.0], [5.0, 2.0]): assert_array_almost_equal(H_analit.dot(p), H_approx.dot(p), decimal=5) njev += 4 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev+approx.nhev, nhev) x = [2.1, 1.2] v = [1.0, 1.0] H_analit = analit.hess(x, v) nhev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev+approx.nhev, nhev) H_approx = approx.hess(x, v) assert_(isinstance(H_approx, LinearOperator)) for v in ([1.0, 2.0], [3.0, 4.0], [5.0, 2.0]): assert_array_almost_equal(H_analit.dot(v), H_approx.dot(v)) njev += 4 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev+approx.nhev, nhev) x = [2.5, 0.3] _ = analit.jac(x) H_analit = analit.hess(x, v0) njev += 1 nhev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev+approx.nhev, nhev) _ = approx.jac(x) H_approx = approx.hess(x, v0) assert_(isinstance(H_approx, LinearOperator)) for v in ([1.0, 2.0], [3.0, 4.0], [5.0, 2.0]): assert_array_almost_equal(H_analit.dot(v), H_approx.dot(v), decimal=4) njev += 4 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev+approx.nhev, nhev) x = [5.2, 2.3] v = [2.3, 5.2] _ = analit.jac(x) H_analit = analit.hess(x, v) njev += 1 nhev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev+approx.nhev, nhev) _ = approx.jac(x) H_approx = approx.hess(x, v) assert_(isinstance(H_approx, LinearOperator)) for v in ([1.0, 2.0], [3.0, 4.0], [5.0, 2.0]): assert_array_almost_equal(H_analit.dot(v), H_approx.dot(v), decimal=4) njev += 4 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(ex.nhev, nhev) assert_array_equal(analit.nhev+approx.nhev, nhev)
def test_finite_difference_jac(self): ex = ExVectorialFunction() nfev = 0 njev = 0 x0 = [1.0, 0.0] v0 = [0.0, 1.0] analit = VectorFunction(ex.fun, x0, ex.jac, ex.hess, None, None, (-np.inf, np.inf), None) nfev += 1 njev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev, njev) approx = VectorFunction(ex.fun, x0, '2-point', ex.hess, None, None, (-np.inf, np.inf), None) nfev += 3 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_equal(analit.f, approx.f) assert_array_almost_equal(analit.J, approx.J) x = [10, 0.3] f_analit = analit.fun(x) J_analit = analit.jac(x) nfev += 1 njev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) f_approx = approx.fun(x) J_approx = approx.jac(x) nfev += 3 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_almost_equal(f_analit, f_approx) assert_array_almost_equal(J_analit, J_approx, decimal=4) x = [2.0, 1.0] J_analit = analit.jac(x) njev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) J_approx = approx.jac(x) nfev += 3 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_almost_equal(J_analit, J_approx) x = [2.5, 0.3] f_analit = analit.fun(x) J_analit = analit.jac(x) nfev += 1 njev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) f_approx = approx.fun(x) J_approx = approx.jac(x) nfev += 3 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_almost_equal(f_analit, f_approx) assert_array_almost_equal(J_analit, J_approx) x = [2, 0.3] f_analit = analit.fun(x) J_analit = analit.jac(x) nfev += 1 njev += 1 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) f_approx = approx.fun(x) J_approx = approx.jac(x) nfev += 3 assert_array_equal(ex.nfev, nfev) assert_array_equal(analit.nfev+approx.nfev, nfev) assert_array_equal(ex.njev, njev) assert_array_equal(analit.njev+approx.njev, njev) assert_array_almost_equal(f_analit, f_approx) assert_array_almost_equal(J_analit, J_approx)