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"""Utils to update configuration files."""
# Copyright (C) 2020 Intel Corporation
#
# 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.
from typing import List
from omegaconf import DictConfig
def flatten_hpo_params(params_dict: DictConfig) -> DictConfig:
"""Flatten the nested hpo parameter section of the config object.
Args:
params_dict: DictConfig: The dictionary containing the hpo parameters in the original, nested, structure.
Returns:
flattened version of the parameter dictionary.
"""
def process_params(nested_params: DictConfig, keys: List[str], flattened_params: DictConfig):
"""Flatten nested dictionary till the time it reaches the hpo params.
Recursive helper function that traverses the nested config object and stores the leaf nodes in a flattened
dictionary.
Args:
nested_params: DictConfig: config object containing the original parameters.
keys: List[str]: list of keys leading to the current location in the config.
flattened_params: DictConfig: Dictionary in which the flattened parameters are stored.
"""
if len({"values", "min", "max"}.intersection(nested_params.keys())) > 0:
key = ".".join(keys)
flattened_params[key] = nested_params
else:
for name, cfg in nested_params.items():
if isinstance(cfg, DictConfig):
process_params(cfg, keys + [str(name)], flattened_params)
flattened_params_dict = DictConfig({})
process_params(params_dict, [], flattened_params_dict)
return flattened_params_dict
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