How to chain multiple PromptNodes together in a Haystack GenerativeQAPipeline

Question

With the help of proper code can you tell me How to chain multiple PromptNodes together in a Haystack GenerativeQAPipeline

Answer 1

To chain multiple PromptNodes in a Haystack GenerativeQAPipeline, use the Pipeline API to sequence PromptNode components, allowing multi-step reasoning and transformation.

Here is the code snippet you can refer to:

In the above code we are using the following points:

• Chained PromptNodes in a Pipeline: Ensures sequential processing of data.
• Multi-Step Reasoning: First retrieves context, then answers questions.
• Uses Haystack's Pipeline API: Modular and scalable for complex workflows.
• Custom Prompt Templates: Each PromptNode has a distinct role in processing.

Hence, chaining multiple PromptNodes in Haystack's GenerativeQAPipeline enables structured, multi-step AI reasoning, improving accuracy, retrieval, and response generation.