fibromyalgia, surgery. Details: I have severe muscle and tendon cramps, both from fibromyalgia and a tendon requiring surgery. I have been treated with several muscle relaxers and none seem to work very well.
Within the field of data analytics, machine learning is a method used to devise complex models and algorithms that lend themselves to prediction; in commercial use, this is known as predictive analytics.
It also says that Cortana can learn from your interests. This would be the Machine Learning part. Machine learning are algorithms that benefit from having a lot of data. Cellphones are very good at collecting such amounts of data.