Summary

A distributed approximate nearest neighborhood search (ANN) library which provides a high quality vector index build, search and distributed online serving toolkits for large scale vector search scenario.

Reference

github.com - Microsoft - SPTAG
https://github.com/microsoft/SPTAG

via

TechCrunch Japan - 2019-05-16 - マイクロソフトがBing検索の重要アルゴリズムをオープンソース化
https://jp.techcrunch.com/2019/05/16/2019-05-15-microsoft-open-sources-a-crucial-algorithm-behind-its-bing-search-services/