MR数据集 https://www.cs.cornell.edu/people/pabo/movie-review-data/ 上下载
sst数据集 https://nlp.stanford.edu/sentiment/ 上下载
word2vec下载 https://drive.google.com/file/d/0B7XkcwpI5KDYNlNUTTlSS21pQmM/edit
国内地址：https://pan.baidu.com/s/1jJ9eAaE
glove下载 http://downloads.cs.stanford.edu/nlp/data/glove.840B.300d.zip
国内地址：https://apache-mxnet.s3.cn-north-1.amazonaws.com.cn/gluon/embeddings/glove/glove.840B.300d.zip
