训练后的随机森林模型导出和加载

运用joblib导出和加载训练后的随机森林模型

    """ 构造随机森林模型和预测 """
    from sklearn.ensemble import RandomForestRegressor
    regressor = RandomForestRegressor(n_estimators=20, oob_score=True)
    regressor.fit(meteo_index_del0[:, 1:5], meteo_index_del0[:, 5].reshape(-1, 1).ravel())
    print("Score:\n", regressor.oob_score_)
    ''' 导出和加载随机森林 '''
    import joblib
    joblib.dump(regressor, "my_random_forest.joblib")  # save
    loaded_rf = joblib.load("my_random_forest.joblib")  # load