Hello everyone, has anyone had any

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A community member is trying to use the Neo4j DB property graph index as a chat engine, but they are encountering an issue where the citations they usually get with a pgvector implementation are missing. They have provided some code, and when they uncomment certain parameters, the application crashes. Another community member suggests that the code should be updated to handle passing those parameters. However, there is no explicitly marked answer to the issue.

00xDrTuna

Hello everyone, has anyone had any success using the neo4j db property graph index as a chat engine? I have this code, and it sort of works but the citations that I usually get with a pgvector implementation are gone. Am I doing this right?
My code:

Plain Text

    logger.info("Connecting to index from Neo4j DB...")
    graph_store = Neo4jPropertyGraphStore(
        username="neo4j",
        password="password",
        url="bolt://localhost:7687",
    )
    index = PropertyGraphIndex.from_existing(
        property_graph_store=graph_store,
    )
    logger.info("Finished connecting to index from Neo4j DB.")
    return index.as_chat_engine(
        similarity_top_k=app_config.TOP_K,
        # system_prompt=system_prompt,
        chat_mode="context",
        # response_mode="tree_summarize",
        # vector_store_query_mode=app_config.VECTOR_STORE_QUERY_MODE,
    )

3 comments

00xDrTuna

Whenever I uncomment the system prompt or any of the commented params, the application crashes because apparently those keywords get passed to the vector query?

00xDrTuna

@Logan M Got any pointers boss? 🥺

LLogan M

Oh hmm. It should probably be updated to handle passing those params

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Hello everyone, has anyone had any