Source code for ax.metrics.branin

#!/usr/bin/env python3
# Copyright (c) Meta Platforms, Inc. and affiliates.
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.

import numpy as np
from ax.metrics.noisy_function import NoisyFunctionMetric
from ax.utils.common.typeutils import checked_cast
from ax.utils.measurement.synthetic_functions import aug_branin, branin

[docs]class BraninMetric(NoisyFunctionMetric):
[docs] def f(self, x: np.ndarray) -> float: x1, x2 = x return checked_cast(float, branin(x1=x1, x2=x2))
[docs]class NegativeBraninMetric(BraninMetric):
[docs] def f(self, x: np.ndarray) -> float: fpos = super().f(x) return -fpos
[docs]class AugmentedBraninMetric(NoisyFunctionMetric):
[docs] def f(self, x: np.ndarray) -> float: return checked_cast(float, aug_branin(x))