debugging

        return -score

    import pyGPGO

    cov = pyGPGO.covfunc.matern32()

    gp = pyGPGO.surrogates.GaussianProcess.GaussianProcess(cov)

    acq = pyGPGO.acquisition.Acquisition(mode='ExpectedImprovement')

    gpgo = pyGPGO.GPGO.GPGO(gp, acq, f, param)

    from pyGPGO.covfunc import matern32

    from pyGPGO.acquisition import Acquisition

    from pyGPGO.surrogates.GaussianProcess import GaussianProcess

    from pyGPGO.GPGO import GPGO

    cov = matern32()

    gp = GaussianProcess(cov)

    acq = Acquisition(mode='ExpectedImprovement')

    gpgo = GPGO(gp, acq, f, param)

    gpgo.run(max_iter=max_iter)

    hp_opt, valid_performance_opt = gpgo.getResult()