yasc.scorecard.check_target(Y, inplace=False)¶Check validity of target.
Target is expected to be categorical including only two values, either ‘bad’ and ‘good’, or 0 and 1. ‘bad’ or 1 indicates a bad case while ‘good’ or 0 a good case.
The target column to check.
Whether to change Y` in place, by default False.
Return None if inplace is True else changed Y with
‘good` replaced with 0 and ‘bad’ 1.
Raises when unique count of labels doesn’t equal 2.
Raises when label values are not valid.
Examples
>>> from yasc.data import german_data
>>> from yasc.scorecard.util import check_target
>>> data = german_data()
>>> data.Creditability
0 good
1 bad
2 good
3 good
4 bad
...
995 good
996 good
997 good
998 bad
999 good
Name: Creditability, Length: 1000, dtype: object
>>> check_target(data.Creditability)
0 0
1 1
2 0
3 0
4 1
..
995 0
996 0
997 0
998 1
999 0
Name: Creditability, Length: 1000, dtype: int64
>>> data.Creditability
0 good
1 bad
2 good
3 good
4 bad
...
995 good
996 good
997 good
998 bad
999 good
Name: Creditability, Length: 1000, dtype: object
>>> check_target(data.Creditability, inplace=True) # Returns None
>>> data.Creditability
0 0
1 1
2 0
3 0
4 1
..
995 0
996 0
997 0
998 1
999 0
Name: Creditability, Length: 1000, dtype: int64