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# Copyright 2019 MilaGraph. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Author: Zhaocheng Zhu
"""Optimizer module of GraphVite"""
from __future__ import absolute_import
import sys
from . import lib, auto
from .helper import find_all_names
module = sys.modules[__name__]
class Optimizer(object):
"""
Optimizer(type=auto, *args, **kwargs)
Create an optimizer instance of any type.
Parameters:
type (str or auto): optimizer type,
can be 'SGD', 'Momentum', 'AdaGrad', 'RMSprop' or 'Adam'
"""
def __new__(cls, type=auto, *args, **kwargs):
if type == auto:
return lib.optimizer.Optimizer(auto)
elif hasattr(lib.optimizer, type):
return getattr(lib.optimizer, type)(*args, **kwargs)
else:
raise ValueError("Unknown optimizer `%s`" % type)
for name in find_all_names(lib.optimizer):
if name not in module.__dict__:
Class = getattr(lib.optimizer, name)
# transfer module ownership so that autodoc can work
Class.__module__ = Class.__module__.replace("libgraphvite", "graphvite")
module.__dict__[name] = Class
__all__ = [
"Optimizer",
"LRSchedule",
"SGD", "Momentum", "AdaGrad", "RMSprop", "Adam"
]