Quoc Phong Nguyen
1 indexed paper
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126
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Info Retrieval×1ML×1
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2026
BACH: A Bayesian Admixture of Contrastive Heads for Multi-Interest Two-Tower Retrieval
The paper introduces BACH, a multi-interest two-tower retrieval model that uses a per-user mixture over heads, mitigating collapse and producing a per-user weighting of interests.
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cs.IRcs.LGEmpiricalRecentJul 9, 2026
BACH: A Bayesian Admixture of Contrastive Heads for Multi-Interest Two-Tower Retrieval
Quoc Phong Nguyen, Paul Albert, Long Vuong, Vuong Le +1 more
The paper introduces BACH, a multi-interest two-tower retrieval model that uses a per-user mixture over heads, mitigating collapse and producing a per-user weighting of interests.
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