As an independent consultant and trainer, he helps organizations making sense of their data. Previously, he was a data scientist at Elsevier in Amsterdam and startups YPlan and Visual Revenue in New York City. Jeroen holds an MSc in artificial intelligence from Maastricht University and a PhD in machine learning from Tilburg University. Recently, He wrote a book titled Data Science at the Command Line, which was published by O'Reilly Media. He blogs at http://jeroenjanssens.com and tweets at https://twitter.com/jeroenhjanssens.