- http://cs224d.stanford.edu/lectures/CS224d-Lecture2.pdf
- http://papers.nips.cc/paper/5021-distributed-representations-of-words-and-phrases-and-their-compositionality.pdf
- http://nlp.stanford.edu/projects/glove/
- http://www.cs.cmu.edu/~bmurphy/NNSE/
- http://arxiv.org/pdf/1301.3781.pdf
- http://metaoptimize.com/projects/wordreprs/