007 GitHub-Code-Link
https://github.com/zekelabs/data-science-complete-tutorial/blob/master/9.%20Model%20Selection%20%26%20Evaluation.ipynb

008 GitHub-Code-Link
https://github.com/zekelabs/data-science-complete-tutorial/blob/master/10.%20Feature%20Selection%20Techniques.ipynb

009 GitHub-Code-Link
https://github.com/zekelabs/data-science-complete-tutorial/blob/master/8.%20Composite%20Estimators%20using%20Pipelines%20%26%20FeatureUnions.ipynb