[KongchangAI]
PaperHeavy-Hitter Oracle

H2O

A KV cache eviction method based on token importance scoring. It identifies and retains important tokens by accumulating attention weights while discarding low-scoring tokens, reducing GPU memory consumption during inference.

Timeline (last 90 days)

Oct 8

Score-based eviction methods such as SnapKV and H2O use attention scores to determine which tokens are unimportant and delete them.

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Oct 7

Common KV cache eviction methods include H2O, ScissorHands, and StreamingLLM, whose core logic is to assign an importance score to each token and remove low-scoring tokens.

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Sep 6

The H2O eviction strategy dynamically eliminates unimportant historical tokens based on attention scores.

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Aug 31

H2O is a dynamic sparse method based on Top-k selection, SnapKV is a method based on cumulative attention scores, and MInference is a structured sparse method with block sparsity.

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