Source code for metaheuristic_designer.parameter_schedules.random_schedule

"""
Schedule that picks a random value at each evaluation.
"""

from typing import Optional

from ..utils import RNGLike
from ..schedulable_parameter import SchedulableParameter




class RandomSchedule(SchedulableParameter):
    """
    Schedule that returns a uniform random value between `init_value` and
    `final_value` at every call, ignoring progress.

    Parameters
    ----------
    init_value : float
        Lower bound of the random interval.
    final_value : float
        Upper bound of the random interval.
    random_state : RNGLike, optional
        Random number generator.
    """

    def __init__(self, init_value: float, final_value: float, random_state: Optional[RNGLike] = None):
        super().__init__(random_state=random_state)
        self.init_value = init_value
        self.final_value = final_value



    def evaluate(self, progress: float) -> float:
        return self.random_state.uniform(self.init_value, self.final_value)