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About this paper

Jiamu Zhang, Tianze Yang, Yucheng Shi, Evan Chen, Zixiang Nie, Kelly Wan, Liangjie Hong, Ninghao Liu and 1 more

AnyJev treats typed model decisions as a readout problem: it freezes an instruction-tuned language model, reads next-token probabilities for option labels, and averages log-probabilities across cyclic option rotations to reduce position bias. It estimates a label prior from unlabelled inputs. Rotation averaging reduced order-flip rates and increased accuracy for all 11 models on two 20-option tasks; however, JevBench’s public subset, with 2–6 options, showed no measurable accuracy change.

Key insights

  • Across 11 models, rotation averaging reduced mean order-flip rates on two 20-option tasks, indicating that position bias is especially relevant when there are many choices.
  • Accuracy gains were not universal: the 20-option tasks improved, while JevBench showed no measurable overall accuracy change and label-prior correction sometimes hurt performance.
  • The stopping rule is designed to reproduce the full-rotation readout, not to guarantee correctness; some reported serving agreement estimates also used the same data to select and assess the threshold.

Summary by alphaXiv.

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