当njobs大于1时，gridsearch输出的行太多

Question

我使用以下代码进行gridsearch，设置njobs = crossvalidation折叠，但是我得到了很多类似下面的行：

GridSearchCV(estimator = est,

                                cv = crossval_n,

                                n_jobs = crossval_n,

                                param_grid = param_grid,

                                scoring = grid_score,

                                verbose = 1000)

信息是这样的：

Pickling array (shape=(2,), dtype=object).

Pickling array (shape=(7,), dtype=object).

Pickling array (shape=(5,), dtype=object).

Pickling array (shape=(5,), dtype=object).

Pickling array (shape=(2,), dtype=object).

Memmaping (shape=(300000,), dtype=float64) to old file /dev/shm/joblib_memmaping_pool_31858_140577309572624/31858-140577424627920-252eb20f1c96190cb0ef65643005ff1e.pkl

Memmaping (shape=(199999,), dtype=int64) to old file /dev/shm/joblib_memmaping_pool_31858_140577309572624/31858-140577424627920-e2ad805d63b492d1bda22f6ecd785fa9.pkl

Pickling array (shape=(100001,), dtype=int64).

[CV]  n_estimators=25, loss=deviance, learning_rate=0.05, max_depth=3, score=0.663848252373, total= 4.5min

[CV] n_estimators=100, loss=deviance, learning_rate=0.05, max_depth=3 

[Parallel(n_jobs=3)]: Done   1 tasks      | elapsed:  4.9min

Pickling array (shape=(3376,), dtype=object).

Memmaping (shape=(73, 300000), dtype=float64) to old file /dev/shm/joblib_memmaping_pool_31858_140577309572624/31858-140577424627920-2a1a398dde29f0da54a999a91072b77b.pkl

Memmaping (shape=(1, 300000), dtype=int64) to old file /dev/shm/joblib_memmaping_pool_31858_140577309572624/31858-140577424627920-108448b3fbe2af627fc26e0b965874b9.pkl

Memmaping (shape=(62, 300000), dtype=float64) to old file /dev/shm/joblib_memmaping_pool_31858_140577309572624/31858-140577424627920-32d40c577c413ff0ea04ade1cc62a62e.pkl

不确定 1) 信息是什么？2) 如果我得到这个信息有什么错误吗？3）如果不是错误信息，如何禁用将其打印出来？

Answer 1

检查verbose您正在使用的参数。verbose : integer    Controls the verbosity: the higher, the more messages.您正在使用verbose=1000，因此您将在输出中获得调整过程的进度。更改verbose=0以禁用它。