elastic search knn indices (aws \ opendistro) 是否支持稀疏向量索引?

Does elastic search knn indices (aws \ opendistro) support sparse vector indices?

AWS 管理的弹性搜索现在包括向量 space knn 索引类型 (https://docs.aws.amazon.com/elasticsearch-service/latest/developerguide/knn.html) which is based on open distro elastic search (https://opendistro.github.io/for-elasticsearch/features/knn.html)

它是否支持使用稀疏向量?

我在文档中找不到任何内容,但底层 nmslib 库 (https://github.com/nmslib/nmslib) 确实支持稀疏向量索引。

截至目前,Opendistro Elasticsearch 支持此功能。但是,已经提出了 github 问题:https://github.com/opendistro-for-elasticsearch/k-NN/issues/112