Static Parameter

baccarat.params.StaticParam

Overview

The StaticParam class provides a fixed, constant value as an array. It is a concrete implementation of the Param abstract base class.

Class Definition

class StaticParam(Param):
    def __init__(self, value):
        """
        Initialize a static parameter.

        Args:
            value: The fixed value to use for all elements
        """
        self.value = value

    def generate(self, rng: np.random.Generator, num_generated: int) -> np.ndarray:
        """
        Generate an array filled with the constant value.

        Args:
            rng: The NumPy random number generator (not used)
            num_generated: Number of elements in the array

        Returns:
            np.ndarray: Array filled with the constant value
        """
        return self.value * np.ones(num_generated)

Usage

from baccarat import Simulator, UniformParam, StaticParam

class GravitySimulator(Simulator):
    # Random initial height (0-100 meters)
    height = UniformParam(0.0, 100.0)

    # Constant gravitational acceleration (9.81 m/s²)
    gravity = StaticParam(9.81)

    def simulation(self):
        # Calculate time to hit ground: t = sqrt(2h/g)
        heights = self.height
        g = self.gravity

        # Return array of fall times
        return np.sqrt(2 * heights / g)

Notes

• The StaticParam creates an array where every element has the same value
• Unlike other parameter types, it does not use the random number generator
• Useful for physical constants or other fixed values in simulations