Paper proposes probabilistic interpretation for KV Cache eviction with decode-time correction
burny_tech · x · 2026-09-01
Addressing the issue where existing KV eviction methods (like top-k heuristics) distort attention after token removal, the paper "A Probabilistic Interpretation of KV Cache Eviction" introduces a new framework.
- Core Idea: Reframes KV eviction as an expectation estimation problem rather than heuristic selection.
- Method: Uses probabilistic sampling and importance weighting to correct for missing KV entries during decoding.
- Result: Achieves a principled bias-variance tradeoff, remaining competitive with existing methods while demonstrating improved robustness across tasks.
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