def test_inv3(self):
"""Test linalg.inv with broadcasting support."""
from linalg import Inv
mtx1 = Ch(np.sin(2**np.arange(12)).reshape((3, 2, 2)))
mtx1_inv = Inv(mtx1)
dr = mtx1_inv.dr_wrt(mtx1)
eps = 1e-5
mtx2 = mtx1.r.copy()
input_diff = np.sin(np.arange(mtx2.size)).reshape(mtx2.shape) * eps
mtx2 += input_diff
mtx2_inv = Inv(mtx2)
output_diff_emp = (np.linalg.inv(mtx2) - np.linalg.inv(mtx1.r)).ravel()
output_diff_pred = Inv(mtx1).dr_wrt(mtx1).dot(input_diff.ravel())
# print output_diff_emp
# print output_diff_pred
self.assertTrue(
np.max(np.abs(output_diff_emp.ravel() -
output_diff_pred.ravel())) < eps * 1e-3)
self.assertTrue(
np.max(np.abs(mtx1_inv.r - np.linalg.inv(mtx1.r)).ravel()) == 0)
def test_inv2(self):
from linalg import Inv
eps = 1e-8
idx = 13
mtx1 = np.random.rand(100).reshape((10,10))
mtx2 = mtx1.copy()
mtx2.ravel()[idx] += eps
diff_emp = (np.linalg.inv(mtx2) - np.linalg.inv(mtx1)) / eps
mtx1 = Ch(mtx1)
diff_pred = Inv(mtx1).dr_wrt(mtx1)[:,13].reshape(diff_emp.shape)
#print(diff_emp)
#print(diff_pred)
#print(diff_emp - diff_pred)
self.assertTrue(np.max(np.abs(diff_pred.ravel()-diff_emp.ravel())) < 1e-4)
def test_inv2(self):
from linalg import Inv
eps = 1e-8
idx = 13
mtx1 = np.random.rand(100).reshape((10,10))
mtx2 = mtx1.copy()
mtx2.ravel()[idx] += eps
diff_emp = (np.linalg.inv(mtx2) - np.linalg.inv(mtx1)) / eps
mtx1 = Ch(mtx1)
diff_pred = Inv(mtx1).dr_wrt(mtx1)[:,13].reshape(diff_emp.shape)
#print diff_emp
#print diff_pred
#print diff_emp - diff_pred
self.assertTrue(np.max(np.abs(diff_pred.ravel()-diff_emp.ravel())) < 1e-4)
def test_inv1(self):
from linalg import Inv
mtx1 = Ch(np.sin(2**np.arange(9)).reshape((3,3)))
mtx1_inv = Inv(mtx1)
dr = mtx1_inv.dr_wrt(mtx1)
eps = 1e-5
mtx2 = mtx1.r.copy()
input_diff = np.sin(np.arange(mtx2.size)).reshape(mtx2.shape) * eps
mtx2 += input_diff
mtx2_inv = Inv(mtx2)
output_diff_emp = (np.linalg.inv(mtx2) - np.linalg.inv(mtx1.r)).ravel()
output_diff_pred = Inv(mtx1).dr_wrt(mtx1).dot(input_diff.ravel())
#print(output_diff_emp)
#print(output_diff_pred)
self.assertTrue(np.max(np.abs(output_diff_emp - output_diff_pred)) < eps*1e-4)
self.assertTrue(np.max(np.abs(mtx1_inv.r - np.linalg.inv(mtx1.r)).ravel()) == 0)
def test_inv1(self):
from linalg import Inv
mtx1 = Ch(np.sin(2**np.arange(9)).reshape((3,3)))
mtx1_inv = Inv(mtx1)
dr = mtx1_inv.dr_wrt(mtx1)
eps = 1e-5
mtx2 = mtx1.r.copy()
input_diff = np.sin(np.arange(mtx2.size)).reshape(mtx2.shape) * eps
mtx2 += input_diff
mtx2_inv = Inv(mtx2)
output_diff_emp = (np.linalg.inv(mtx2) - np.linalg.inv(mtx1.r)).ravel()
output_diff_pred = Inv(mtx1).dr_wrt(mtx1).dot(input_diff.ravel())
#print output_diff_emp
#print output_diff_pred
self.assertTrue(np.max(np.abs(output_diff_emp - output_diff_pred)) < eps*1e-4)
self.assertTrue(np.max(np.abs(mtx1_inv.r - np.linalg.inv(mtx1.r)).ravel()) == 0)
def test_inv3(self):
"""Test linalg.inv with broadcasting support."""
from linalg import Inv
mtx1 = Ch(np.sin(2**np.arange(12)).reshape((3,2,2)))
mtx1_inv = Inv(mtx1)
dr = mtx1_inv.dr_wrt(mtx1)
eps = 1e-5
mtx2 = mtx1.r.copy()
input_diff = np.sin(np.arange(mtx2.size)).reshape(mtx2.shape) * eps
mtx2 += input_diff
mtx2_inv = Inv(mtx2)
output_diff_emp = (np.linalg.inv(mtx2) - np.linalg.inv(mtx1.r)).ravel()
output_diff_pred = Inv(mtx1).dr_wrt(mtx1).dot(input_diff.ravel())
# print output_diff_emp
# print output_diff_pred
self.assertTrue(np.max(np.abs(output_diff_emp.ravel() - output_diff_pred.ravel())) < eps*1e-3)
self.assertTrue(np.max(np.abs(mtx1_inv.r - np.linalg.inv(mtx1.r)).ravel()) == 0)
