amiola questions

amiola answers

• Why should LabelEncoder from sklearn be used only for the target variable?
• How to create pandas output for custom transformers?
• how to use ColumnTransformer() to return a dataframe?
• How to extract feature names from sklearn pipeline transformers?
• Ruff does not autofix line-too-long violation
• Pipeline with SimpleImputer and OneHotEncoder - how to do properly?
• Plotting the ROC curve for a multiclass problem
• Preserve column order after applying sklearn.compose.ColumnTransformer
• understanding sklearn calibratedClassifierCV
• How does Machine Learning algorithm retain learning from previous execution?