python - 属性错误 : 'MinMaxScaler' object has no attribute 'clip'

Question

当我尝试加载已保存的 sklearn.preprocessing.MinMaxScaler 时出现以下错误

/shared/env/lib/python3.6/site-packages/sklearn/base.py:315: UserWarning: Trying to unpickle estimator MinMaxScaler from version 0.23.2 when using version 0.24.0. This might lead to breaking code or invalid results. Use at your own risk.
  UserWarning)
[2021-01-08 19:40:28,805 INFO train.py:1317 - main ] EXCEPTION WORKER 100: 
Traceback (most recent call last):
  ...
  File "/shared/core/simulate.py", line 129, in process_obs
    obs = scaler.transform(obs)
  File "/shared/env/lib/python3.6/site-packages/sklearn/preprocessing/_data.py", line 439, in transform
    if self.clip:
AttributeError: 'MinMaxScaler' object has no attribute 'clip'

我在一台机器上训练了缩放器，保存了它，然后将它推送到第二台机器上，在那里它被加载并用于转换输入。

# loading and transforming
import joblib
from sklearn.preprocessing import MinMaxScaler

scaler = joblib.load('scaler')
assert isinstance(scaler, MinMaxScaler)
data = scaler.transform(data)  # throws exception

Answer 1

问题是您在 sklearn 版本较旧的机器上训练缩放器，而不是用于加载缩放器的机器。
通知 UserWarningUserWarning: Trying to unpickle estimator MinMaxScaler from version 0.23.2 when using version 0.24.0. This might lead to breaking code or invalid results. Use at your own risk. UserWarning)解决方案是修复版本不匹配。通过将一个 sklearn 升级到 0.24.0或降级到 0.23.2