用于从原始的非结构化的文本中，无监督地学习到文本隐层的主题向量表达。它支持包括TF-IDF，LSA，LDA...
(2) Even if the word does not appear in the training corpus, the word vector of the word can still be constructed from the character-level n-gram [21]. (3) n-gram can allow the method to learn word order information. If n-gram is not considered, the information contained in the ...