Your Self-Play Algorithm is Secretly an Adversarial Imitator: Understanding LLM Self-Play through the Lens of Imitation Learning

arXiv:2602.01357v2 Announce Type: replace Abstract: Self-play post-training methods has emerged as an effective approach for finetuning large language models and turn the weak language model into strong language model without preference data. However, the theoretical foundations for self-play finetuning remain underexplored. In this work, we tackle this by connecting self-play finetuning with adversarial imitation learning by formulating finetuning procedure as a min-max game between the model and a regularized implicit reward player parameterized by the model itself. This perspective unifies
The rapid advancement of LLMs and the need for more efficient and robust training methods without extensive human preference data drives this exploration into self-play algorithms' theoretical underpinnings.
Understanding the theoretical foundations of self-play in LLMs can lead to more stable, efficient, and powerful AI models, impacting the development and deployment of agentic systems.
This research provides a theoretical framework to understand and potentially optimize LLM self-play, moving it from a purely empirical technique towards a more principled engineering discipline.
- · AI researchers
- · LLM developers
- · Generative AI sector
- · Labs relying solely on preference data
- · Less theoretically grounded AI development methods
Improved fine-tuning techniques lead to more performant and autonomous language models.
Enhanced LLM capabilities accelerate the viability and deployment of AI agent systems across various industries.
More sophisticated and self-improving AI agents could transform white-collar productivity and reshape business operations.
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Read at arXiv cs.LG