The 2nd PRONIA Summer School that took place from 2nd to 5th of May 2017 at LMU in Munich was again a great success. The organizers received excellent feedback and overall it was a superb machine learning summer school that was even significantly improved from the first PRONIA Summer School in 2015. All participants could learn a lot and exchanged with each other in fruitful discussions. For further information, please find pictures of the event below.