Author

Fei-Yu Jiang

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Sep 2026

Turning Cold Entities Warm: LLM-Based User and Item Interaction Simulation for Recommendations

Recommendation throughout the cold-start period remains a challenge in recommender systems. Strictly cold entities (users/items) have no interactions, while warm-up entities only have a few unreliable interactions. Strict cold-start methods typically overlook warm-up entities, while warm-up methods are generally not de...

Hao Chen, Li-Jia Chen, Huan Gong et al. · ACM Transactions on Informat... · 0 citations

Preprint Sep 2026

Tensor-BEKK: Conditional Covariance Modeling and Inference for Tensor-Valued Time Series

Modern economic and financial data are increasingly organized as multiway arrays, with observations indexed simultaneously by geographic regions, industrial sectors, asset categories, and other economic characteristics. Representing such data as tensor-valued time series preserves their intrinsic multiway structure. Al...

Huan Gong, Fei-Yu Jiang · 0 citations