def from_config(cls, config, custom_objects=None):
globs = globals()
if custom_objects:
globs = dict(list(globs.items()) + list(custom_objects.items()))
function_type = config.pop('function_type')
if function_type == 'function':
# Simple lookup in custom objects
function = deserialize_keras_object(
config['function'],
custom_objects=custom_objects,
printable_module_name='function in Lambda layer')
elif function_type == 'lambda':
# Unsafe deserialization from bytecode
function = func_load(config['function'], globs=globs)
else:
raise TypeError('Unknown function type:', function_type)
# If arguments were numpy array, they have been saved as
# list. We need to recover the ndarray
if 'arguments' in config:
for key in config['arguments']:
if isinstance(config['arguments'][key], dict):
arg_dict = config['arguments'][key]
if 'type' in arg_dict and arg_dict['type'] == 'ndarray':
# Overwrite the argument with its numpy translation
config['arguments'][key] = np.array(arg_dict['value'])
config['function'] = function
return cls(**config)
def deserialize(config, custom_objects=None):
"""Inverse of the `serialize` function.
Arguments:
config: Optimizer configuration dictionary.
custom_objects: Optional dictionary mapping
names (strings) to custom objects
(classes and functions)
to be considered during deserialization.
Returns:
A Keras Optimizer instance.
"""
all_classes = {
'sgd': SGD,
'rmsprop': RMSprop,
'adagrad': Adagrad,
'adadelta': Adadelta,
'adam': Adam,
'adamax': Adamax,
'nadam': Nadam,
'tfoptimizer': TFOptimizer,
}
# Make deserialization case-insensitive for built-in optimizers.
if config['class_name'].lower() in all_classes:
config['class_name'] = config['class_name'].lower()
return deserialize_keras_object(config,
module_objects=all_classes,
custom_objects=custom_objects,
printable_module_name='optimizer')
def from_config(cls, config, custom_objects=None):
globs = globals()
if custom_objects:
globs = dict(list(globs.items()) + list(custom_objects.items()))
function_type = config.pop('function_type')
if function_type == 'function':
# Simple lookup in custom objects
function = deserialize_keras_object(
config['function'],
custom_objects=custom_objects,
printable_module_name='function in Lambda layer')
elif function_type == 'lambda':
# Unsafe deserialization from bytecode
function = func_load(config['function'], globs=globs)
else:
raise TypeError('Unknown function type:', function_type)
# If arguments were numpy array, they have been saved as
# list. We need to recover the ndarray
if 'arguments' in config:
for key in config['arguments']:
if isinstance(config['arguments'][key], dict):
arg_dict = config['arguments'][key]
if 'type' in arg_dict and arg_dict['type'] == 'ndarray':
# Overwrite the argument with its numpy translation
config['arguments'][key] = np.array(arg_dict['value'])
config['function'] = function
return cls(**config)
def deserialize(config, custom_objects=None):
"""Inverse of the `serialize` function.
Arguments:
config: Optimizer configuration dictionary.
custom_objects: Optional dictionary mapping
names (strings) to custom objects
(classes and functions)
to be considered during deserialization.
Returns:
A Keras Optimizer instance.
"""
all_classes = {
'sgd': SGD,
'rmsprop': RMSprop,
'adagrad': Adagrad,
'adadelta': Adadelta,
'adam': Adam,
'adamax': Adamax,
'nadam': Nadam,
'tfoptimizer': TFOptimizer,
}
# Make deserialization case-insensitive for built-in optimizers.
if config['class_name'].lower() in all_classes:
config['class_name'] = config['class_name'].lower()
return deserialize_keras_object(
config,
module_objects=all_classes,
custom_objects=custom_objects,
printable_module_name='optimizer')
def from_config(cls, config, custom_objects=None):
globs = globals()
if custom_objects:
globs = dict(list(globs.items()) + list(custom_objects.items()))
function_type = config.pop('function_type')
if function_type == 'function':
# Simple lookup in custom objects
function = deserialize_keras_object(
config['function'],
custom_objects=custom_objects,
printable_module_name='function in Lambda layer')
elif function_type == 'lambda':
# Unsafe deserialization from bytecode
function = func_load(config['function'], globs=globs)
else:
raise TypeError('Unknown function type:', function_type)
config['function'] = function
return cls(**config)
def from_config(cls, config, custom_objects=None):
globs = globals()
if custom_objects:
globs = dict(list(globs.items()) + list(custom_objects.items()))
function_type = config.pop('function_type')
if function_type == 'function':
# Simple lookup in custom objects
function = deserialize_keras_object(
config['function'],
custom_objects=custom_objects,
printable_module_name='function in Lambda layer')
elif function_type == 'lambda':
# Unsafe deserialization from bytecode
function = func_load(config['function'], globs=globs)
else:
raise TypeError('Unknown function type:', function_type)
config['function'] = function
return cls(**config)
def deserialize(config, custom_objects=None):
"""Instantiates a layer from a config dictionary.
Arguments:
config: dict of the form {'class_name': str, 'config': dict}
custom_objects: dict mapping class names (or function names)
of custom (non-Keras) objects to class/functions
Returns:
Layer instance (may be Model, Sequential, Layer...)
"""
from tensorflow.contrib.keras.python.keras import models # pylint: disable=g-import-not-at-top
globs = globals() # All layers.
globs['Model'] = models.Model
globs['Sequential'] = models.Sequential
return deserialize_keras_object(config,
module_objects=globs,
custom_objects=custom_objects,
printable_module_name='layer')
def deserialize(config, custom_objects=None):
"""Instantiates a layer from a config dictionary.
Arguments:
config: dict of the form {'class_name': str, 'config': dict}
custom_objects: dict mapping class names (or function names)
of custom (non-Keras) objects to class/functions
Returns:
Layer instance (may be Model, Sequential, Layer...)
"""
from tensorflow.contrib.keras.python.keras import models # pylint: disable=g-import-not-at-top
globs = globals() # All layers.
globs['Model'] = models.Model
globs['Sequential'] = models.Sequential
return deserialize_keras_object(
config,
module_objects=globs,
custom_objects=custom_objects,
printable_module_name='layer')
def deserialize(name, custom_objects=None):
return deserialize_keras_object(
name,
module_objects=globals(),
custom_objects=custom_objects,
printable_module_name='loss function')
def deserialize(config, custom_objects=None):
return deserialize_keras_object(
config,
module_objects=globals(),
custom_objects=custom_objects,
printable_module_name='regularizer')
def deserialize(config, custom_objects=None):
return deserialize_keras_object(
config,
module_objects=globals(),
custom_objects=custom_objects,
printable_module_name='initializer')
def deserialize(name, custom_objects=None):
return deserialize_keras_object(
name,
module_objects=globals(),
custom_objects=custom_objects,
printable_module_name='metric function')
