def build_network_from_description(description):
seed = description['$seed'] if '$seed' in description else None
net = build_network_from_architecture(description['architecture'], seed)
init = create_from_description(description['initialization'])
net.initialize(init)
if 'regularization' in description and description['regularization']:
reg = create_from_description(description['regularization'])
net.set_regularizers(reg)
if 'constraints' in description and description['constraints']:
con = create_from_description(description['constraints'])
net.set_constraints(con)
if 'error_function' in description and description['error_function']:
net.error_func = create_from_description(description['error_function'])
return net
def build_network_from_description(description):
seed = description['$seed'] if '$seed' in description else None
net = build_network_from_architecture(description['architecture'], seed)
init = create_from_description(description['initialization'])
net.initialize(init)
if 'regularization' in description and description['regularization']:
reg = create_from_description(description['regularization'])
net.set_regularizers(reg)
if 'constraints' in description and description['constraints']:
con = create_from_description(description['constraints'])
net.set_constraints(con)
if 'error_function' in description and description['error_function']:
net.error_func = create_from_description(description['error_function'])
return net
def test_create_gaussian_initializer_from_dict(self):
description = {
'@type': 'Gaussian',
'std': 23.0,
'mean': 7.0
}
init = create_from_description(description)
self.assertIsInstance(init, Gaussian)
self.assertEqual(init.mean, 7.0)
self.assertEqual(init.std, 23.0)
def test_sparse_inputs_initalizer_from_description(self):
description = {
'@type': 'SparseInputs',
'connections': 69,
'init': {'@type': 'Gaussian',
'std': 23.0,
'mean': 7.0}
}
init = create_from_description(description)
self.assertIsInstance(init, SparseInputs)
self.assertEqual(init.connections, 69)
self.assertIsInstance(init.init, Gaussian)
self.assertEqual(init.init.std, 23.0)
self.assertEqual(init.init.mean, 7.0)
def test_custom_initializer(self):
class Custom(Initializer):
def __init__(self, foo):
Initializer.__init__(self)
self.foo = foo
c = Custom('bar')
descr = c.__describe__()
self.assertDictEqual(descr, {'@type': 'Custom',
'foo': 'bar'})
c2 = create_from_description(descr)
self.assertNotEqual(c, c2)
self.assertIsInstance(c2, Custom)
self.assertEqual(c2.foo, 'bar')
def test_create_initializer_from_list(self):
self.assertListEqual(create_from_description([1]), [1])
self.assertListEqual(create_from_description([1, 2, 3]), [1, 2, 3])
self.assertListEqual(create_from_description([1.0, -1.0]), [1.0, -1.0])
def test_create_initializer_from_plain_number(self):
self.assertEqual(create_from_description(0.0), 0.0)
self.assertEqual(create_from_description(1.0), 1.0)
self.assertEqual(create_from_description(5), 5)
