langchain/docs/modules/chains/how_to_guides.rst

How-To Guides
=============

A chain is made up of links, which can be either primitives or other chains.
Primitives can be either `prompts <../prompts.html>`_, `llms <../llms.html>`_, `utils <../utils.html>`_, or other chains.
The examples here are all end-to-end chains for specific applications.
They are broken up into four categories:

1. `Generic Chains <./generic_how_to.html>`_: Generic chains, that are meant to help build other chains rather than serve a particular purpose.
2. `CombineDocuments Chains <./combine_docs_how_to.html>`_: Chains aimed at making it easy to work with documents (question answering, summarization, etc).
3. `Utility Chains <./utility_how_to.html>`_: Chains consisting of an LLMChain interacting with a specific util.
4. `Asynchronous <./async_chain.html>`_: Covering asynchronous functionality.

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

   ./generic_how_to.rst
   ./combine_docs_how_to.rst
   ./utility_how_to.rst

In addition to different types of chains, we also have the following how-to guides for working with chains in general:

`Load From Hub <./generic/from_hub.html>`_: This notebook covers how to load chains from `LangChainHub <https://github.com/hwchase17/langchain-hub>`_.
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> 2023-01-02 16:24:09 +00:00			`How-To Guides`
			`=============`

			`A chain is made up of links, which can be either primitives or other chains.`
			Primitives can be either `prompts <../prompts.html>`_, `llms <../llms.html>`_, `utils <../utils.html>`_, or other chains.
			`The examples here are all end-to-end chains for specific applications.`
Modify number of types of chains (#1089) Changed number of types of chains to make it consistent with the rest of the docs 2023-02-16 15:06:30 +00:00			`They are broken up into four categories:`
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> 2023-01-02 16:24:09 +00:00
Feature: linkcheck-action (#534) (#542) - Add support for local build and linkchecking of docs - Add GitHub Action to automatically check links before prior to publication - Minor reformat of Contributing readme - Fix existing broken links Co-authored-by: Hunter Gerlach <hunter@huntergerlach.com> Co-authored-by: Hunter Gerlach <HunterGerlach@users.noreply.github.com> Co-authored-by: Hunter Gerlach <hunter@huntergerlach.com> 2023-01-05 05:39:50 +00:00			1. `Generic Chains <./generic_how_to.html>`_: Generic chains, that are meant to help build other chains rather than serve a particular purpose.
			2. `CombineDocuments Chains <./combine_docs_how_to.html>`_: Chains aimed at making it easy to work with documents (question answering, summarization, etc).
			3. `Utility Chains <./utility_how_to.html>`_: Chains consisting of an LLMChain interacting with a specific util.
Add asyncio support for LLM (OpenAI), Chain (LLMChain, LLMMathChain), and Agent (#841) Supporting asyncio in langchain primitives allows for users to run them concurrently and creates more seamless integration with asyncio-supported frameworks (FastAPI, etc.) Summary of changes: LLM * Add `agenerate` and `_agenerate` * Implement in OpenAI by leveraging `client.Completions.acreate` Chain * Add `arun`, `acall`, `_acall` * Implement them in `LLMChain` and `LLMMathChain` for now Agent * Refactor and leverage async chain and llm methods * Add ability for `Tools` to contain async coroutine * Implement async SerpaPI `arun` Create demo notebook. Open questions: * Should all the async stuff go in separate classes? I've seen both patterns (keeping the same class and having async and sync methods vs. having class separation) 2023-02-08 05:21:57 +00:00			4. `Asynchronous <./async_chain.html>`_: Covering asynchronous functionality.
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> 2023-01-02 16:24:09 +00:00
			`.. toctree::`
			`:maxdepth: 1`
			`:glob:`
			`:hidden:`

Feature: linkcheck-action (#534) (#542) - Add support for local build and linkchecking of docs - Add GitHub Action to automatically check links before prior to publication - Minor reformat of Contributing readme - Fix existing broken links Co-authored-by: Hunter Gerlach <hunter@huntergerlach.com> Co-authored-by: Hunter Gerlach <HunterGerlach@users.noreply.github.com> Co-authored-by: Hunter Gerlach <hunter@huntergerlach.com> 2023-01-05 05:39:50 +00:00			`./generic_how_to.rst`
			`./combine_docs_how_to.rst`
			`./utility_how_to.rst`
add docs for loading from hub (#763) 2023-01-27 15:10:26 +00:00
			`In addition to different types of chains, we also have the following how-to guides for working with chains in general:`

			`Load From Hub <./generic/from_hub.html>`_: This notebook covers how to load chains from `LangChainHub <https://github.com/hwchase17/langchain-hub>`_.