tomaarsen @tomaarsen · 18 Aug 2026
HierarchicalTokenPooling (Clavié, Chaffin & Adams) clusters each document's token vectors with Ward linkage & keeps ~1/pool_factor of them. pool_factor=2 halves the index at 100.6% of unpooled BEIR performance. Apply it per call, standalone, or bake it into the model. https://t.co/kakKs27jEu
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