mirror of
https://github.com/gryf/coach.git
synced 2025-12-17 11:10:20 +01:00
76 lines
2.4 KiB
Python
76 lines
2.4 KiB
Python
#
|
|
# Copyright (c) 2017 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 rl_coach.base_parameters import Parameters
|
|
from rl_coach.core_types import RunPhase, ActionType
|
|
from rl_coach.spaces import ActionSpace
|
|
|
|
|
|
class ExplorationParameters(Parameters):
|
|
def __init__(self):
|
|
self.action_space = None
|
|
|
|
@property
|
|
def path(self):
|
|
return 'rl_coach.exploration_policies.exploration_policy:ExplorationPolicy'
|
|
|
|
|
|
class ExplorationPolicy(object):
|
|
def __init__(self, action_space: ActionSpace):
|
|
"""
|
|
:param action_space: the action space used by the environment
|
|
"""
|
|
self.phase = RunPhase.HEATUP
|
|
self.action_space = action_space
|
|
|
|
def reset(self):
|
|
"""
|
|
Used for resetting the exploration policy parameters when needed
|
|
:return: None
|
|
"""
|
|
pass
|
|
|
|
def get_action(self, action_values: List[ActionType]) -> ActionType:
|
|
"""
|
|
Given a list of values corresponding to each action,
|
|
choose one actions according to the exploration policy
|
|
:param action_values: A list of action values
|
|
:return: The chosen action
|
|
"""
|
|
pass
|
|
|
|
def change_phase(self, phase):
|
|
"""
|
|
Change between running phases of the algorithm
|
|
:param phase: Either Heatup or Train
|
|
:return: none
|
|
"""
|
|
self.phase = phase
|
|
|
|
def requires_action_values(self) -> bool:
|
|
"""
|
|
Allows exploration policies to define if they require the action values for the current step.
|
|
This can save up a lot of computation. For example in e-greedy, if the random value generated is smaller
|
|
than epsilon, the action is completely random, and the action values don't need to be calculated
|
|
:return: True if the action values are required. False otherwise
|
|
"""
|
|
return True
|
|
|
|
def get_control_param(self):
|
|
return 0
|