How to implement Multi-Hop Retrieval Mechanism for Complex Question Answering

Question

Can i know How to implement Multi-Hop Retrieval Mechanism for Complex Question Answering.

Answer 1

You can implement a Multi-Hop Retrieval Mechanism by chaining multiple retrieval steps using tools like FAISS and a retriever model to iteratively refine context for complex question answering.

Here is the code snippet below:

In the above code we are using the following key points:

• SentenceTransformer and FAISS to build fast vector search retrieval.

• Two-step (multi-hop) retrieval by refining the query after the first search.

• Transformers pipeline to perform QA on the expanded multi-hop context.

Hence, multi-hop retrieval enhances QA systems by progressively deepening context for more accurate answers to complex queries.