Facebook’s AI Research (FAIR) group has released open-source, optimized deep-learning modules for their open sourced Torch development environment for numerics, machine learning, and computer vision, with a particular emphasis on deep learning and convolutional nets.
The release includes GPU-optimized modules for large convolutional nets and networks with sparse activations that are commonly used in NLP applications.
See fbcunn for installation instructions, documentation and examples to train classifiers and iTorch for an IPython Kernel for Torch.