This page covers how to use theLantern within LangChainIt is broken into two parts: setup, and then references to specific Lantern wrappers.

Setup​

1. The first step is to create a database with thelantern extension installed.

   Follow the steps atLantern Installation Guide to install the database and the extension. The docker image is the easiest way to get started.

Wrappers​

VectorStore​

There exists a wrapper around Postgres vector databases, allowing you to use it as a vectorstore,whether for semantic search or example selection.

To import this vectorstore:

from langchain_community.vectorstoresimport Lantern

Usage​

For a more detailed walkthrough of the Lantern Wrapper, seethis notebook