cd79cf8661
* Add common based class for A2C and PPO agent factories * Add default for dist_fn parameter, adding corresponding factories * Add example mujoco_a2c_hl
36 lines
1.0 KiB
Python
36 lines
1.0 KiB
Python
from abc import ABC, abstractmethod
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from collections.abc import Callable
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from typing import TypeAlias
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import torch
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from tianshou.highlevel.env import Environments, EnvType
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from tianshou.policy.modelfree.pg import TDistParams
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TDistributionFunction: TypeAlias = Callable[[TDistParams], torch.distributions.Distribution]
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class DistributionFunctionFactory(ABC):
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@abstractmethod
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def create_dist_fn(self, envs: Environments) -> TDistributionFunction:
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pass
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def _dist_fn_categorical(p):
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return torch.distributions.Categorical(logits=p)
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def _dist_fn_gaussian(*p):
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return torch.distributions.Independent(torch.distributions.Normal(*p), 1)
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class DistributionFunctionFactoryDefault(DistributionFunctionFactory):
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def create_dist_fn(self, envs: Environments) -> TDistributionFunction:
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match envs.get_type():
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case EnvType.DISCRETE:
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return _dist_fn_categorical
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case EnvType.CONTINUOUS:
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return _dist_fn_gaussian
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case _:
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raise ValueError(envs.get_type())
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