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https://github.com/vale981/ray
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32 lines
998 B
Python
32 lines
998 B
Python
from typing import Optional
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from ray.rllib.utils.annotations import override, PublicAPI
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from ray.rllib.utils.framework import try_import_tf
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from ray.rllib.utils.schedules.schedule import Schedule
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from ray.rllib.utils.typing import TensorType
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tf1, tf, tfv = try_import_tf()
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@PublicAPI
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class ConstantSchedule(Schedule):
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"""A Schedule where the value remains constant over time."""
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def __init__(self, value: float, framework: Optional[str] = None):
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"""Initializes a ConstantSchedule instance.
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Args:
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value: The constant value to return, independently of time.
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framework: The framework descriptor string, e.g. "tf",
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"torch", or None.
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"""
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super().__init__(framework=framework)
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self._v = value
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@override(Schedule)
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def _value(self, t: TensorType) -> TensorType:
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return self._v
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@override(Schedule)
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def _tf_value_op(self, t: TensorType) -> TensorType:
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return tf.constant(self._v)
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