Autonomy-of-Heads: Data-Free Sparse Attention from Frozen Query-Key Geometry
This work proposes Autonomy-of-Heads (AoH), a data-free method that identifies retrieval and streaming heads from the spectral geometry of query-key projections that retains 96.5% of Full Attention performance on average while reducing prefill and decode latency by up to 41.4 and 66.0%, respectively, and KV-cache memor...