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SHE: Stepwise Hybrid Examination Reinforcement Learning Framework for E-commerce Search Relevance

arXiv – CS AI|Pengkun Jiao, Yiming Jin, Jianhui Yang, Chenhe Dong, Zerui Huang, Shaowei Yao, Xiaojiang Zhou, Dan Ou, Haihong Tang|
🤖AI Summary

Researchers introduce SHE (Stepwise Hybrid Examination), a new reinforcement learning framework that improves AI-powered e-commerce search relevance prediction. The framework addresses limitations in existing training methods by using step-level rewards and hybrid verification to enhance both accuracy and interpretability of search results.

Key Takeaways
  • SHE framework combines stepwise reward policy optimization with hybrid verification to improve e-commerce search relevance prediction.
  • The approach addresses key limitations of existing methods including poor generalization on long-tail queries and sparse feedback issues.
  • The framework integrates diversified data filtering and multi-stage curriculum learning to enhance robustness and prevent policy collapse.
  • Extensive experiments show SHE outperforms existing baselines like SFT, DPO, and GRPO in real-world e-commerce settings.
  • The solution enhances both prediction accuracy and interpretability while maintaining logical consistency in AI reasoning.
Read Original →via arXiv – CS AI
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