SIGNALAI·Jul 7, 2026, 4:00 AMSignal75Short term

The Three Regimes of Offline-to-Online Reinforcement Learning

Source: arXiv cs.AI

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The Three Regimes of Offline-to-Online Reinforcement Learning

arXiv:2510.01460v4 Announce Type: replace-cross Abstract: Offline-to-online reinforcement learning (RL) has emerged as a practical paradigm that leverages offline datasets for pretraining and online interactions for fine-tuning. However, its empirical behavior is highly inconsistent: design choices of online fine-tuning that work well in one setting can fail completely in another. Guided by the stability--plasticity principle, we propose a framework that can explain this inconsistency: We argue that efficient fine-tuning must preserve the utility of the stronger offline prior, whether that is

Why this matters
Why now

The paper provides a framework that addresses the inconsistency in offline-to-online reinforcement learning, which is a critical bottleneck for deploying more robust and adaptable AI systems in dynamic environments.

Why it’s important

This research is crucial for advancing AI's practical application, particularly in developing autonomous agents that can learn effectively from both pre-existing data and real-time interaction.

What changes

The proposed framework offers a principled approach to designing more effective fine-tuning strategies in offline-to-online RL, potentially leading to more reliable and consistent AI agent performance across varied settings.

Winners
  • · AI researchers and developers
  • · Companies deploying autonomous systems
  • · Reinforcement learning applications
Losers
  • · Approaches lacking principled fine-tuning
  • · Systems with high online data dependency exclusively
Second-order effects
Direct

Improved performance and broader applicability of AI agents in complex, real-world scenarios.

Second

Accelerated development and adoption of AI systems requiring continuous adaptation and learning.

Third

Enhanced trust and reliability in AI-powered automation across various industries due to more predictable learning behavior.

Editorial confidence: 85 / 100 · Structural impact: 55 / 100
Original report

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Read at arXiv cs.AI
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