A block‑sparse attention matrix visualized as a grid of active blocks.

Building a Pure‑Python Block‑Sparse Sliding‑Window Attention (Longformer‑Style)

Implement block‑sparse sliding‑window attention in pure Python to handle long sequences efficiently, mirroring Longformer’s design.

October 7, 2026 · 7 min · 1385 words · martinuke0
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