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#artificial intelligence Preprint Oct 2026

Revisiting Generative vs. Dense Retrieval: A Static Value Prior Reverses the Gap

Generative retrieval (GR) has emerged as a strong candidate generator for sequential recommendation as language models and semantic-item identifiers have improved. However, GR is not a uniformly stronger replacement of dense retrieval (DR) in online retail candidate generation. We examine their differences on two Amazo...

Ren-Bo Tu, Yang Liu, Shu-Ying Sun · 0 citations
#artificial intelligence Preprint Sep 2026

T-RoPE: Time-Aware Rotary Position Embedding for Sequential Recommendation

Large-scale recommenders increasingly adopt the sequential generative recipe behind large language models, bringing the Transformer into recommendation along with design choices made for text, including Rotary Position Embedding (RoPE). In language models, RoPE encodes token indices for relative position reasoning, but...

Yang Liu, Noel Loo, Ali Khanafer et al. · 0 citations

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