Issue Regarding Encoding Choices

[parthkl021]

In the file model_notebook.ipynb all the columns have been categorically encoded, though I believe some of them should have been one-hot encoded.

Sex: 'male' and 'female' are nominal categories with no intrinsic order.
Housing: Categories like 'own', 'free', etc., are nominal and do not imply an order.
Saving accounts and Checking account: There is a perceived order in terms of the amount, but the same has not been used.
Purpose: 'radio/TV', 'education', 'furniture/equipment', which are nominal categories with no inherent order.

Can someone please look into it and if possible assign it to me.
Edit: The same issue is there in the file classifiers.py as well