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Wei-Hai Lu

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Preprint Sep 2026

P$^3$Rec: Distilling Prior--Posterior Preference Reasoning for LLM-based Recommendation

P$^3$Rec is proposed, a framework that jointly extracts and internalizes complementary prior and posterior preference reasoning knowledge and achieves more complete preference reasoning while preserving efficient recommendation.

Jin-Fei Chen, Wei-Hai Lu, Jia-Wei Cheng · 0 citations
Preprint Sep 2026

AtomRec: Evolving Atomic Memory for Agentic Recommendation

Experiments show that \textsc{AtomRec} consistently outperforms state-of-the-art agentic and memory-augmented baselines, with around 8.5\% average relative improvement across metrics.

Pei-Yu Hu, Wei-Hai Lu, Si-Ying Gu et al. · 0 citations
Jul 2026

Hierarchical Latent Reasoning for LLM-based Recommendation

To further optimize the reasoning trajectory, HiLaR combines final recommendation feedback with layer-aware process rewards derived from the marginal target-likelihood gain of each state, and generally outperforms strong sequential, generative, and LLM-based recommendation baselines.

Pei-Yu Hu, Si-Ying Gu, Wei-Hai Lu et al. · 1 citation
Book Open access Jul 2026

Think, But Don't Tell: Implicit Reasoning for LLM-based Sequential Recommendation via Multi-Teacher Distillation

I Reasoning via Multi-Teacher Distillation is proposed, a novel framework that 'compiles' the reasoning abilities of large teacher LLMs into a lightweight student Small Language Model (SLM), which significantly outperforms state-of-the-art baselines in both recommendation accuracy and inference efficiency.

Weihai Lu, Xiaoxi Cui, Chenke Yin · 0 citations

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