Step-wise Peer Advantage (SPA): A critic-free step-level credit assignment mechanism that aligns parallel trajectories by decision step and estimates advantages from peer returns.
Diversity-Aware Exploration Reward: Promotes long-tail entity discovery by upweighting rare findings and downweighting redundant ones.

This checkpoint represents the Llama-3.1-8B-Instruct base model trained with SPADER.

Repository: KhanCold/spader
Paper: arXiv:2606.00593

Citation

bibtex

@misc{shi2026spaderstepwisepeeradvantage,
      title={SPADER: Step-wise Peer Advantage with Diversity-Aware Exploration Rewards for Multi-Answer Question Answering}, 
      author={Qiming Shi and Zhaolu Kang and Yunfan Zhou and Di Weng and Yingcai Wu},
      year={2026},
      eprint={2606.00593},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2606.00593}, 
}

KhanCold/llama3-8b-spader

SPADER: Step-wise Peer Advantage with Diversity-Aware Exploration Rewards for Multi-Answer Question Answering

Model Description

Citation

KhanCold/
llama3-8b-spader