RAG Question Decomposition

Decompose questions to obtain clearer, more reliable answers from RAG systems.

RAG Question Decomposition Overview

The Problem

Many user questions bundle multiple assumptions, constraints, or reasoning steps into a single query. In a standard RAG pipeline:

Diffuse retrieval

Multiple topics blur search focus.

Hard to trace errors

No visibility into failure points.

Coarse-grained evaluation

Only final answer is measured.

Unpredictable failures

System behaves like a black box.

What qa-tools Produces

Using question decomposition, qa-tools produces:

Explicit sub-questions

Derived from the original query.

Clear dependency structure

Between reasoning steps.

Per-step retrieval

Focused search for each sub-question.

Intermediate signals

Inspectable and evaluatable.

Why This Matters

Question decomposition turns RAG from a single opaque step into a structured reasoning process. It enables:

Better retrieval precision
Easier debugging
Step-level evaluation
Predictable behavior