Network Rail owns and operates the entire rail infrastructure in the UK; their challenge is to keep all the trains running on time and to maximize the services provided by the rail providers that run on its infrastructure. Network Rail needed to predict the results of train delay incidents and how to best deal with them to make sure the service runs smoothly. With the UK rail network being the busiest and oldest in the world, this is no easy task and relies on the power of big data and data science! Anya Rumyantseva Data Scientist Pentaho, a Hitachi Group Company Michael Fish Sales Engineer Pentaho, a Hitachi Group Company Caio Moreno Professional Services Senior Consultant Pentaho, a Hitachi Group Company