Hi cr4zy! Thanks for mentioning me in the post. At google we have our own large-scale deep learning framework (the Google Brain) that is well constructed and f

Hi cr4zy! Thanks for mentioning me in the post. At google we have our own large-scale deep learning framework (the Google Brain) that is well constructed and fits the google infrastructure well, so it is understandable that we did not use Caffe at google for the challenge. Mathematically all libraries are alike though, so one is more or less free to choose whatever tool that comes most handy. (hint: you probably want to try out Caffe, or join Google :)) On the detection front we actually adopted the idea of R-CNN quite a lot, so I guess in the context of research, we are standing on the shoulder of existing great research results! Please stay tuned for our upcoming blog post about GoogLeNet and a more detailed introduction of the method at ECCV.