I see you've posted a GitHub link to a Jupyter Notebook! GitHub doesn't render large Jupyter Notebooks, so just in case, here is an nbviewer link to the notebook:

https://nbviewer.jupyter.org/url/github.com/rasbt/machine-learning-book/blob/main/ch18/ch18%5C_part1.ipynb

Want to run the code yourself? Here is a binder link to start your own Jupyter server and try it out!

https://mybinder.org/v2/gh/rasbt/machine-learning-book/main?filepath=ch18%2Fch18%5C_part1.ipynb

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