AINeutralarXiv – CS AI · 9h ago6/10
🧠
Answer Presence Drives RAG Rewriting Gains
A new research audit challenges the assumed benefits of LLM rewriters in retrieval-augmented QA systems, finding that performance gains stem primarily from the presence of gold answer strings in rewritten context rather than from genuine passage curation. The study introduces controlled intervention methods to test rewriter claims, revealing that conventional evaluation probes are sensitive to methodology choices and may report misleading results.