Fb has open sourced some deep learning modules for Torch. Let's see what's that all about.

https://github.com/facebook/fbcunn

...

References

http://torch.ch - Lua scientific computing framework

https://research.facebook.com/blog/879898285375829/fair-open-sources-deep-learning-modules-for-torch/

http://arxiv.org/abs/1412.7580

https://github.com/facebook/fbcunn - main FAIR repo

http://nlp.stanford.edu/projects/DeepLearningInNaturalLanguageProcessing.shtml - Stanford NLP Deep Learning page

http://nlp.stanford.edu/courses/NAACL2013/NAACL2013-Socher-Manning-DeepLearning.pdf - excellent presentation on Deep Learning for NLP