K-Means Clustering in Scala

Talk given to blip.pt introducing functional programming in Scala and explaining how the k-mean clustering algorithm works.
I then build the k-means implementation in Scala as an example on how to follow functional principles when writing code.
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[@abc_cba]

You're the best teacher in Scala there is ! Thank you.

[@codtriotv]

Great explanation!!, really helped me. I have a question.
How to you handle `step(index - 1)`? It must be giving IndexOutOfBoundException -1, when index is 0

[@prophetskj]

very clearly explained .... keep them coming....