bo.maximize的估计器GaussianProcessRegressor错误的无效参数corr

Question

尝试自己实现此示例

http://philipperemy.github.io/visualization/

但是我在这行上出错

bo.maximize(init_points=2, n_iter=0, acq='ucb', kappa=KAPPA, **gp_params)

错误是

ValueError: Invalid parameter corr for estimator GaussianProcessRegressor(alpha=1e-06, copy_X_train=True,
             kernel=Matern(length_scale=1, nu=2.5),
             n_restarts_optimizer=25, normalize_y=True,
             optimizer='fmin_l_bfgs_b',
             random_state=<mtrand.RandomState object at 0x000001DC4E8B61B0>). Check the list of available parameters with `estimator.get_params().keys()`.

有人知道是什么问题吗？