Utility of calculating gram matrix in k-means++ method

[pshwetank]

Hi Jordan Ash,

First of all, thank you for sharing such a clear and concise code. It has been a delight while going through the code step by step and understanding it.
I was curious about the last steps in kmeans++ code that involves calculating gram matrix followed by eigenvalues calculation. However, I saw no usage of it anywhere while sampling. I wanted to know if its as usual or something is missing in kmeans code.

Thanks,
Shwetank