Pinterest Unifies Heterogeneous Retrieval with MESH
_reachsumit · x · 2026-07-15
Pinterest released MESH: Scaling Up Retrieval with Heterogeneous Content Unification.
This modular retrieval architecture splits content into three sub-towers: fresh, evergreen, and long-tail, aiming to solve the "scaling bias" problem in retrieval systems. The authors state that their goal is to achieve more balanced and scalable unified retrieval across different content types.
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