People who do ML for a job? There's plenty of heavy duty machine learning libraries and implementations for big data platforms. Just spark alone has a fairly h

People who do ML for a job? There's plenty of heavy duty machine learning libraries and implementations for big data platforms. Just spark alone has a fairly high quality one: http://spark.apache.org/docs/latest/mllib-guide.html http://spark.apache.org/docs/latest/mllib-guide.html