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About this paper

Yujie Luo, Xiangyuan Ru, Jingsheng Zheng, Jingjing Wang, Yuqi Zhu, Jintian Zhang, Runnan Fang, Kewei Xu and 5 more

Autonomous Agentic Data Engineering frames data curation as an optimization problem in which an LLM plans, codes, validates, and revises a training-data pipeline for a fixed student model. Across science, code, and finance tasks, iterative agents generally outperform one-shot generation, with GPT-5.2 reaching a 57.29% average relative gain from scratch and Claude-4-Sonnet achieving 73.26% with seed data, while failures in filtering, semantic consistency, and distribution balance remain common.

Key insights

  • Feedback-driven iteration is more valuable than simply generating a larger batch once: performance gains often occur within the first 8–15 iterations before plateauing, and iterative GPT-5.2 improves substantially over its one-shot counterpart.
  • Autonomous refinement primarily broadens instruction and response diversity; improvements in intrinsic solution quality are smaller, indicating that agents are better at expanding coverage than reliably correcting semantic or reasoning errors.
  • Seed data acts as a guide rail for weaker agents but does not guarantee better results, since it can constrain exploration and its effect varies by model and domain.

Summary by alphaXiv.

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