LangChain - Fundamentals
You want to build a LangChain app that asks a user's name, then uses an LLM to greet them. Which architecture correctly links these parts?
You want to build a LangChain app that asks a user's name, then uses an LLM to greet them. Which architecture correctly links these parts?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand LangChain app structure
PromptTemplate creates the question, LLMChain links prompt and LLM to generate answers.Step 2: Identify correct linking
Create a PromptTemplate for the question, then an LLMChain with that prompt and an LLM, then run the chain with user input correctly creates prompt, then LLMChain with prompt and LLM, then runs with input.Final Answer:
Create a PromptTemplate for the question, then an LLMChain with that prompt and an LLM, then run the chain with user input -> Option DQuick Check:
Prompt + LLM in chain = C [OK]
Quick Trick: Chain = prompt + LLM + run with input [OK]
Common Mistakes:
- Trying to run prompt alone without chain
- Using LLM without prompt or chain
- Skipping linking steps in LangChain
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