On The Statistical Limits of Self-Improving Agents
On the map: Synthetic data and self-improvement for LLMs → Self-evolving LLM agents
Abstract (arXiv)
We develop a learning-theoretic framework for analyzing self-improving agents by decomposing self-modification into five axes. Within this framework, we prove a sharp boundary: under standard i.i.d. assumptions, distribution-free PAC learnability is preserved if and only if the policy-reachable family remains uniformly capacity-bounded. If reachable capacity can grow without bound, utility-rational self-changes can make learnable tasks unlearnable. We further introduce a simple Two-Gate guardrail -- a validation-improvement requirement plus a capacity cap -- that preserves this boundary and yields standard VC-rate guarantees. The broader implication is that self-modification must be constrained not only by objectives, but also by structural conditions that preserve the statistical prerequisites for learning. As AI systems become increasingly intelligent and autonomous, this framework provides a foundation for the statistical theory of self-improvement.
Key facts. Cited by 5 papers in the map (data through 14 Oct 2026). Placed in Self-evolving LLM agents, one of 13 directions in Synthetic data and self-improvement for LLMs. Builds on 26 of its 51 references that are in the map. First posted on arXiv 5 Oct 2025.
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26 of 51 references.
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Other references · 25
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13 more
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- 2022A Theory of PAC Learnability under Transformation Invariancescited by 21
- 2024Revisiting Agnostic PAC Learningcited by 11
- 2025PAC Learning with Improvementscited by 6
- 2024Computable learning of natural hypothesis classescited by 3
- 2024Metagoals Endowing Self-Modifying AGI Systems with Goal Stability or Moderated Goal Evolution: Toward a Formally Sound and Practical Approachcited by 1
Built on by
Citing papers per year: 2026: 5.
5 papers.
- 2026Hierarchical Self-Improvement: A Framework for Task-Specific Evolvable Agent Harnessescited by 7
- 2026A Theory of Reliable Self-Evolution for Agent Harnessescited by 2
- 2026Why Code, Why Now: An Information-Theoretic Perspective on the Limits of Machine Learningcited by 0
- 2026Which Self-Improvements Should We Trust? Reliable Self-Improvement When Agents Reuse Their Benchmarkscited by 0
- 2026Learning without Overwriting: A Theory of Self-Distillation and Supervised Fine-Tuning in Continual Reasoningcited by 0
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- 2026Which Self-Improvements Should We Trust? Reliable Self-Improvement When Agents Reuse Their Benchmarks27 Sep 2026
- 2026A Theory of Reliable Self-Evolution for Agent Harnesses8 Sep 2026
- 2026Hierarchical Self-Improvement: A Framework for Task-Specific Evolvable Agent Harnesses9 Aug 2026
- 2026Why Code, Why Now: An Information-Theoretic Perspective on the Limits of Machine Learning15 Feb 2026
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