Next point-of-interest (POI) recommendation predicts users’ future destinations from historical mobility sequences and has become a key component of location-based services. However, mainstream models often concentrate exposure on a small set of popular POIs, leaving long-tail merchants systematically under-exposed. Wh...
An-Ran Zhang, Jia-Qi Jiang, Jia-Hui Jin et al.· Proceedings of the 20th ACM...· 0 citations
DivCDSR is proposed, a novel model-agnostic framework designed to enhance diversity in CDSR that introduces a dual-prototype semantic constraint mechanism that mitigates the homogenization trap via intra-domain clustering with orthogonalization and inter-domain separation and devise a dual-guided diffusion module that...
Shu Chen, Yu-Han Zhao, Weixin Chen et al.· Proceedings of the 32nd ACM...· 0 citations
While Cross-Domain Sequential Recommendation (CDSR) has proven effective in mitigating data sparsity and enhancing accuracy, its impact on recommendation diversity remains largely unexplored. We are the first to reveal a counterintuitive phenomenon: while CDSR improves accuracy, it often comes at the cost of diversity,...
Shu Chen, Yuhan Zhao, Weixin Chen et al.· Proceedings of the 32nd ACM...· 0 citations
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