https://www.elastic.co/cn/blog/whats-new-elastic-8-0-0
新版es 新增的 机器学习 算法
https://towardsdatascience.com/elasticsearch-meets-bert-building-search-engine-with-elasticsearch-and-bert-9e74bf5b4cf2
https://github.com/Hironsan/bertsearch
未完待续
Introduction to modern natural language processing with PyTorch in Elasticsearch