cs.IR · 2026-07-10 · No. 49

Information Retrieval, 2026-07-10.

1 new papers in cs.IR. Titles, authors, abstracts. Links to arXiv. Want this in your inbox every morning? Subscribe →

01 — The papers

1 entries
  1. 01

    BACH: A Bayesian Admixture of Contrastive Heads for Multi-Interest Two-Tower Retrieval

    Quoc Phong Nguyen, Paul Albert, Long Vuong, Vuong Le, Julien Monteil

    cs.IR · cs.LG

    Two-tower retrievers compress each user into a single embedding, limiting their ability to serve diverse interests. Multi-interest models give each user several heads scored by a maximum inner product, but their hard-routing training under-utilizes heads (routing collapse) and gives no per-user estimate of how much each interest matters for serving. We present \textbf{BACH} (\emph{Bayesian Admixture of Contrastive Heads}), which casts...

    arxiv.org/abs/2607.08107 · PDF

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