One notably successful use of deep learning is embedding, a method used to represent discrete variables as continuous vectors.
来源:https://towardsdatascience.com/neural-network-embeddings-explained-4d028e6f0526
Word Embedding => Collective term for models that learned to map a set of words or phrases in a vocabulary to vectors of numerical values.
https://towardsdatascience.com/what-the-heck-is-word-embedding-b30f67f01c81
ML-Embeddings-嵌套-机器学习原理
https://www.jianshu.com/p/2abab52de52a