Pattern
LangChain retrievers
Provide a retriever abstraction (BaseRetriever) that composes uniformly with the rest of LangChain's ecosystem: any vector store can expose a retriever, retrievers compose via LCEL into chains, the chains plug into agents, and the agents plug into the broader LangChain runtime.
Classification — General-purpose framework with retriever abstractions composable into LCEL chains.
Full entry
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