langchain/docs/reference/indexes.rst

Indexes
==============
Indexes refer to ways to structure documents so that LLMs can best interact with them.
LangChain has a number of modules that help you load, structure, store, and retrieve documents.

.. toctree::
   :maxdepth: 1
   :glob:

   modules/docstore
   modules/text_splitter
   modules/document_loaders
   modules/vectorstores
   modules/retrievers
   modules/document_compressors
   modules/document_transformers