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Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

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Yun-Xiang Ren

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Book Open access Sep 2026

Embedding Subspace Partitioning for Dynamic Multi-Objective Retrieval

Embedding Subspace Partitioning (ESP) is proposed, a retrieval framework that decomposes the embedding into task-aware subspaces and replaces the single dot product with a weighted sum of per-subspace similarities, whose weights are tunable at serving time.

Shao-Bo Zhang, Alice Leung, Yun-Xiang Ren et al. · 0 citations
Book Open access Sep 2026

Embedding Subspace Partitioning for Dynamic Multi-Objective Retrieval

Modern industrial recommender systems must optimize across competing objectives, balancing semantic relevance with business metrics such as engagement and revenue. While bi-encoders dominate large-scale retrieval due to their efficiency, they collapse these heterogeneous signals into a single static embedding space. Th...

Shao-Bo Zhang, Alice Leung, Yun-Xiang Ren et al. · 0 citations

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