For all you Rubyists out there, here is a great talk from the recent Ruby Conf 2013 that took place in Miami Beach on Nov. 8-10 – Thinking About Machine Learning with Ruby by Bryan Liles.
Not sure where to cluster or where to classify? Have you seen a linear regression lately? Every wanted to take a look into machine learning? Curious to what problems you can solve? Using Ruby to become familiar with machine learning and data-mining techniques is great way to get acclimated before diving in with both feet.