A simple prefix-and-sample test reveals bias in video models
Kangwook_Lee · x · 2026-08-04
The author proposes a simple way to study bias in video models using a prefix video and many sampled continuations.
- Create a prefix with several plausible next scenes.
- Sample many possible continuations.
- Compare how often the model prefers one path over another.
The post argues this matters more as video models become foundations for action models / world action models, where biased continuations could shape downstream behavior.
Related event: Prefix Sampling Method Proposed to Test Video Model Biases(3 posts)→
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