Source code for ax.metrics.branin

#!/usr/bin/env python3
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.

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 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