tensorflow word2vec

https://zhuanlan.zhihu.com/p/28979653

https://kexue.fm/archives/4402/

https://www.cnblogs.com/tensorflownews/p/7617327.html

http://blog.csdn.net/mydear_11000/article/details/52776307

https://www.cnblogs.com/edwardbi/p/5511785.html

https://stackoverflow.com/questions/43070656/how-to-use-pretrained-word2vec-model-in-tensorflow

https://stackoverflow.com/questions/39843584/gensim-doc2vec-vs-tensorflow-doc2vec