ray/rllib/utils/schedules/constant_schedule.py

27 lines
696 B
Python

from ray.rllib.utils.annotations import override
from ray.rllib.utils.framework import try_import_tf
from ray.rllib.utils.schedules.schedule import Schedule
tf1, tf, tfv = try_import_tf()
class ConstantSchedule(Schedule):
"""
A Schedule where the value remains constant over time.
"""
def __init__(self, value, framework):
"""
Args:
value (float): The constant value to return, independently of time.
"""
super().__init__(framework=framework)
self._v = value
@override(Schedule)
def _value(self, t):
return self._v
@override(Schedule)
def _tf_value_op(self, t):
return tf.constant(self._v)