Search Results for author: Ji Cheng

Found 2 papers, 1 papers with code

Diffusion-based Contrastive Learning for Sequential Recommendation

no code implementations15 May 2024 Ziqiang Cui, Haolun Wu, Bowei He, Ji Cheng, Chen Ma

Given a user sequence, our method selects certain positions and employs a context-aware diffusion model to generate alternative items for these positions with the guidance of context information.

Contrastive Learning Sequential Recommendation

Evolve Cost-aware Acquisition Functions Using Large Language Models

1 code implementation25 Apr 2024 Yiming Yao, Fei Liu, Ji Cheng, Qingfu Zhang

Many real-world optimization scenarios involve expensive evaluation with unknown and heterogeneous costs.

Bayesian Optimization Decision Making

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