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Eight Guidance Tricks Couldn’t Consistently Beat the Baseline

A re-evaluation on two rectified-flow transformers found no training-free guidance method that improved every measured criterion.

Published Updated Story ID: mp-2026-08-18-017
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Summary

A re-evaluation on two rectified-flow transformers found no training-free guidance method that improved every measured criterion.

The study retested eight classifier-free-guidance relatives with compositional-alignment metrics. APG recorded several nominal best scores, often within uncertainty, while attention perturbations showed isolated gains and more frequent degradation on one model. Plain CFG remained a competitive lower-cost baseline in this protocol.

Why it matters

A re-evaluation on two rectified-flow transformers found no training-free guidance method that improved every measured criterion.

Limits and context

No additional limitation was separately recorded.

Key claims

  1. A re-evaluation on two rectified-flow transformers found no training-free guidance method that improved every measured criterion.

    Evidence: source-2026-08-18-019

Sources

  1. arXiv preprint 2608.16786arXiv · primary research

Corrections

No corrections have been recorded for this story.