搜索引擎 倒排索引 opensearch.org

* [搜索引擎都在用的倒排索引——原理与实现 - 知乎](https://zhuanlan.zhihu.com/p/324378430)
* [OpenSearch](https://opensearch.org/)
* [AI & Analytics Services | OpenText](https://www.opentext.com/services/ai-and-analytics)