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36 lines
1.3 KiB
Python
36 lines
1.3 KiB
Python
#
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# Copyright (c) 2017 Intel Corporation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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from exploration_policies.exploration_policy import *
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class ThompsonSampling(ExplorationPolicy):
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def __init__(self, tuning_parameters):
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"""
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:param tuning_parameters: A Preset class instance with all the running paramaters
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:type tuning_parameters: Preset
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"""
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ExplorationPolicy.__init__(self, tuning_parameters)
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self.action_space_size = tuning_parameters.env.action_space_size
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def get_action(self, action_values):
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q_values, values_uncertainty = action_values
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sampled_q_values = np.random.normal(q_values, abs(values_uncertainty))
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return np.argmax(sampled_q_values)
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def get_control_param(self):
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return 0
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