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In Langchain, which component is primarily responsible for attaching source citations to generated answers in RAG?

easy📝 Conceptual Q2 of 15
LangChain - RAG Chain Construction
In Langchain, which component is primarily responsible for attaching source citations to generated answers in RAG?
AThe chain that combines retrieval and generation
BThe language model that generates text
CThe retriever that fetches documents
DThe tokenizer that processes input text
Step-by-Step Solution
Solution:

  1. Step 1: Identify roles of Langchain components

    The retriever fetches documents; the language model generates text; the chain combines these steps.

  2. Step 2: Determine which part attaches source citations

    The chain manages both retrieval and generation, so it attaches sources to the final answer.

  3. Final Answer:

    The chain that combines retrieval and generation -> Option A

  4. Quick Check:

    Source attachment = Chain role [OK]
Quick Trick: Chains combine retrieval and generation, adding sources [OK]
Common Mistakes:
  • Confusing retriever as source attacher
  • Thinking language model adds sources
  • Assuming tokenizer handles citations

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