langchain/docs/extras/use_cases/summarization.mdx

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# 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 recommended way to get started using a summarization chain is:

```python
from langchain.chains.summarize import load_summarize_chain
chain = load_summarize_chain(llm, chain_type="map_reduce")
chain.run(docs)
```

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

Additional related resources include:
- [Modules for working with documents](/docs/modules/data_connection): Core components for working with documents.
use top nav docs (#8090) 1 year ago			`---`
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Docs refactor (#480) Big docs refactor! Motivation is to make it easier for people to find resources they are looking for. To accomplish this, there are now three main sections: - Getting Started: steps for getting started, walking through most core functionality - Modules: these are different modules of functionality that langchain provides. Each part here has a "getting started", "how to", "key concepts" and "reference" section (except in a few select cases where it didnt easily fit). - Use Cases: this is to separate use cases (like summarization, question answering, evaluation, etc) from the modules, and provide a different entry point to the code base. There is also a full reference section, as well as extra resources (glossary, gallery, etc) Co-authored-by: Shreya Rajpal <ShreyaR@users.noreply.github.com> 2 years ago			`# Summarization`

			`Summarization involves creating a smaller summary of multiple longer documents.`
improve documentation on how to pass in custom prompts (#561) 2 years ago			`This can be useful for distilling long documents into the core pieces of information.`

			`The recommended way to get started using a summarization chain is:`

			```python
			`from langchain.chains.summarize import load_summarize_chain`
			`chain = load_summarize_chain(llm, chain_type="map_reduce")`
			`chain.run(docs)`
			```
Docs refactor (#480) Big docs refactor! Motivation is to make it easier for people to find resources they are looking for. To accomplish this, there are now three main sections: - Getting Started: steps for getting started, walking through most core functionality - Modules: these are different modules of functionality that langchain provides. Each part here has a "getting started", "how to", "key concepts" and "reference" section (except in a few select cases where it didnt easily fit). - Use Cases: this is to separate use cases (like summarization, question answering, evaluation, etc) from the modules, and provide a different entry point to the code base. There is also a full reference section, as well as extra resources (glossary, gallery, etc) Co-authored-by: Shreya Rajpal <ShreyaR@users.noreply.github.com> 2 years ago
			`The following resources exist:`
Doc refactor (#6300) Co-authored-by: jacoblee93 <jacoblee93@gmail.com> Co-authored-by: Harrison Chase <hw.chase.17@gmail.com> 1 year ago			`- [Summarization notebook](/docs/modules/chains/popular/summarize.html): A notebook walking through how to accomplish this task.`
Docs refactor (#480) Big docs refactor! Motivation is to make it easier for people to find resources they are looking for. To accomplish this, there are now three main sections: - Getting Started: steps for getting started, walking through most core functionality - Modules: these are different modules of functionality that langchain provides. Each part here has a "getting started", "how to", "key concepts" and "reference" section (except in a few select cases where it didnt easily fit). - Use Cases: this is to separate use cases (like summarization, question answering, evaluation, etc) from the modules, and provide a different entry point to the code base. There is also a full reference section, as well as extra resources (glossary, gallery, etc) Co-authored-by: Shreya Rajpal <ShreyaR@users.noreply.github.com> 2 years ago
			`Additional related resources include:`
docs/fix links (#6498) 1 year ago			`- [Modules for working with documents](/docs/modules/data_connection): Core components for working with documents.`