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langchain/docs/versioned_docs/version-0.2.x/changelog/langchain.mdx
Jacob Lee aff771923a Jacob/new docs (#20570)
Use docusaurus versioning with a callout, merged master as well

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Signed-off-by: Weichen Xu <weichen.xu@databricks.com>
Signed-off-by: Rahul Tripathi <rauhl.psit.ec@gmail.com>
Co-authored-by: Leonid Ganeline <leo.gan.57@gmail.com>
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Co-authored-by: Erick Friis <erick@langchain.dev>
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Co-authored-by: Eugene Yurtsev <eugene@langchain.dev>
Co-authored-by: Dawson Bauer <105886620+djbauer2@users.noreply.github.com>
Co-authored-by: Ravindu Somawansa <ravindu.somawansa@gmail.com>
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2024-04-18 11:10:55 -07:00

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# langchain
## 0.1.0 (Jan 5, 2024)
#### Deleted
No deletions.
#### Deprecated
Deprecated classes and methods will be removed in 0.2.0
| Deprecated | Alternative | Reason |
|---------------------------------|-----------------------------------|------------------------------------------------|
| ChatVectorDBChain | ConversationalRetrievalChain | More general to all retrievers |
| create_ernie_fn_chain | create_ernie_fn_runnable | Use LCEL under the hood |
| created_structured_output_chain | create_structured_output_runnable | Use LCEL under the hood |
| NatBotChain | | Not used |
| create_openai_fn_chain | create_openai_fn_runnable | Use LCEL under the hood |
| create_structured_output_chain | create_structured_output_runnable | Use LCEL under the hood |
| load_query_constructor_chain | load_query_constructor_runnable | Use LCEL under the hood |
| VectorDBQA | RetrievalQA | More general to all retrievers |
| Sequential Chain | LCEL | Obviated by LCEL |
| SimpleSequentialChain | LCEL | Obviated by LCEL |
| TransformChain | LCEL/RunnableLambda | Obviated by LCEL |
| create_tagging_chain | create_structured_output_runnable | Use LCEL under the hood |
| ChatAgent | create_react_agent | Use LCEL builder over a class |
| ConversationalAgent | create_react_agent | Use LCEL builder over a class |
| ConversationalChatAgent | create_json_chat_agent | Use LCEL builder over a class |
| initialize_agent | Individual create agent methods | Individual create agent methods are more clear |
| ZeroShotAgent | create_react_agent | Use LCEL builder over a class |
| OpenAIFunctionsAgent | create_openai_functions_agent | Use LCEL builder over a class |
| OpenAIMultiFunctionsAgent | create_openai_tools_agent | Use LCEL builder over a class |
| SelfAskWithSearchAgent | create_self_ask_with_search | Use LCEL builder over a class |
| StructuredChatAgent | create_structured_chat_agent | Use LCEL builder over a class |
| XMLAgent | create_xml_agent | Use LCEL builder over a class |