Torch: bleeding edge DNN research

You can find some background for this post here: Deep Learning with Python! Torch has its strengths and its weaknesses. Caffe is much more popular that Torch, but when talking to some power users of Deep Learning (like Andrej Karpathy and other DeepMind scientists), a certain group of experts seems to be migrating from Caffe to Torch. I read somewhere else that Caffe: Torch:: Applications: Research. If you want to do serious research in deep learning, I would suggest using Torch given the level of current interest in the ecosystem, as well as Torch's flexibility and platform.