arXiv AI By Federico Mazzoni, Andrea Failla

Incremental Retrieval-Augmented Generation for Human-in-the-Loop Decision Support

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The paper presents iRAG, a human‑in‑the‑loop decision‑support system that blends Retrieval‑Augmented Generation with Hybrid Decision‑Making. Unlike traditional RAG models that rely on static knowledge bases, iRAG starts with an empty KB and incrementally builds it from human decisions, storing past decisions as retrievable precedents. The system progresses from silent observation to evidence‑grounded contestation and ultimately to autonomous handling with abstention, achieving low error rates even under knowledge drift and demonstrating a stability–plasticity trade‑off.

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