Closing the Feedback Loop: From Experience Extraction to Insight Governance in Verbal Reinforcement Learning
Researchers propose a three-layer architecture (rules, evidence, skills) to close the feedback loop in verbal reinforcement learning, solving the retention-forgetting dilemma for LLM agents in non-stationary environments.
Computer Science > Artificial Intelligence
Title:Closing the Feedback Loop: From Experience Extraction to Insight Governance in Verbal Reinforcement Learning
View PDF HTML (experimental)Abstract:Training-free verbal reinforcement learning enables LLM agents to learn from world feedback -- objective signals such as dynamic task outcomes, market returns, or demand forecasts -- by extracting verbal rules from experience and injecting them as context, updating the agent's behavior without parameter changes. However, in non-stationary environments these agents face a retention-forgetting dilemma: retaining stale insights causes negative transfer, while discarding them causes catastrophic forgetting when conditions recur. We identify four requirements for navigating this dilemma -- outcome-driven evaluation, persistent structured evidence, non-monotonic knowledge lifecycle, and compositional governance -- and show that existing methods invest heavily in experience extraction while underinvesting in insight governance. We propose a three-layer architecture -- rules, evidence, and skills -- connected by a feedback-driven curation loop that closes the governance gap. Rules capture distilled experience from world outcomes; evidence logs track each rule's reliability across episodes; skills govern which rules to apply, how to resolve conflicts, and when to abstain. On financial forecasting as a case study, where world feedback is naturally abundant, noisy, and non-stationary, we show that the same accumulated experience either degrades performance below the zero-shot baseline or dramatically improves accuracy and risk-adjusted returns, depending on whether the curation loop is present.
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Source: arXiv cs.AI Recent
