This page covers how to use the OpenSearch ecosystem within LangChain.It is broken into two parts: installation and setup, and then references to specific OpenSearch wrappers.

Installation and Setup​

• Install the Python package withpip install opensearch-py

Wrappers​

VectorStore​

There exists a wrapper around OpenSearch vector databases, allowing you to use it as a vectorstorefor semantic search using approximate vector search powered by lucene, nmslib and faiss enginesor using painless scripting and script scoring functions for bruteforce vector search.

To import this vectorstore:

from langchain_community.vectorstoresimport OpenSearchVectorSearch

For a more detailed walkthrough of the OpenSearch wrapper, seethis notebook