DeepLearning4j author here. I'd just like to add that despite training neural networks being hard, they are great for understanding data if trained right. Ther

DeepLearning4j author here. I'd just like to add that despite training neural networks being hard, they are great for understanding data if trained right. There are a lot of innovations in image processing wrt neural nets specifically. The right neural network can learn everything from scene detection to simple object recognition. I would highly reccommend taking a look at the neural nets course on coursera to understand some of the use cases.