ResearchResearch paperLarge Language Models2 sources · Oct 14, 2026

Latent Compaction with Test-Time Training

We introduce Latent Compaction, which learns a compact document-specific cache through test-time training.

Key points

  • Long contexts enlarge key--value (KV) caches, increasing memory use and attention costs during generation.
  • Compressing these caches must preserve information for unseen questions.
  • We initialize cache entries using reconstruction importance, teacher attention, and key-space diversity.
  • These results show that treating the KV cache as a neural network and optimizing it with test-time training can preserve retrieval accuracy under aggressive compression.

Sources (2)

  • [1]Latent Compaction with Test-Time Training
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 14, 05:57 PM
    We introduce **Latent Compaction**, which learns a compact document-specific cache through test-time training.
    Long contexts enlarge key--value (KV) caches, increasing memory use and attention costs during generation.
  • [2]Latent Compaction with Test-Time Training
    Hugging Face Daily Papers · Oct 14, 12:00 AM · same content

Extractive summary: sentences quoted from the sources.

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