# Summarization

Summarization involves creating a smaller summary of multiple longer documents.
This can be useful for distilling long documents into the core pieces of information

The following resources exist:
- [Summarization Notebook](/modules/chains/combine_docs_examples/summarize.ipynb): A notebook walking through how to accomplish this task.

Additional related resources include:
- [Utilities for working with Documents](/modules/utils/how_to_guides.rst): Guides on how to use several of the utilities which will prove helpful for this task, including Text Splitters (for splitting up long documents).
- [CombineDocuments Chains](/modules/chains/combine_docs.md): A conceptual overview of specific types of chains by which you can accomplish this task.
- [Data Augmented Generation](combine_docs.md): An overview of data augmented generation, which is the general concept of combining external data with LLMs (of which this is a subset).