1. Learn
    2. /
  2. Courses
    3. /
  3. Retrieval Augmented Generation (RAG) with LangChain
Connected

Exercise

Validating Cypher queries

When the LLMs generate the Cypher query, they have the graph schema available for reference; however, this doesn't mean there's absolute certainty that the query will reflect the schema perfectly. To improve reliability, you can validate and fix the generated query against the schema, which is particularly well-suited to fixing incorrect relationship directions.

Instructions

100 XP
  • Create a graph QA chain that queries the graph database, including an additional check to validate the generated Cypher query; an llm has been defined for you and you should set verbose=True.
  • Invoke the graph_qa_chain with the input provided.