collaborators

5 papers

cs.LG2026

AdaPCLA: Adaptive Prior-Calibrated Logit Adjustment for Long-Tailed Longitudinal EHR Generation

Shuai Cui, Chen Wenxuan, Wenjie Du +3

The paper introduces AdaPCLA, a framework that improves generative models for longitudinal electronic health records by adaptively adjusting logits to better represent rare disease…

cs.LG2026

HELIX: Hybrid Encoding with Learnable Identity and Cross-dimensional Synthesis for Time Series Imputation

Fengming Zhang, Wenjie Du, Huan Zhang +2

Time series imputation benefits from leveraging cross-feature correlations, yet existing attention-based methods re-discover feature relationships at each layer, lacking persistent…

cs.LG2026

End-to-End Learning for Partially-Observed Time Series with PyPOTS

Wenjie Du, Yiyuan Yang, Tianxiang Zhan +1

Partially-observed time series (POTS) is ubiquitous in real-world applications, yet most existing toolchains separate missing-value handling from downstream learning, which limits…

cs.CL2025

Time-MQA: Time Series Multi-Task Question Answering with Context Enhancement

Yaxuan Kong, Yiyuan Yang, Yoontae Hwang +5

Time series data are foundational in finance, healthcare, and energy domains. However, most existing methods and datasets remain focused on a narrow spectrum of tasks, such as fore…

cs.LG2025

Beyond Random Missingness: Clinically Rethinking for Healthcare Time Series Imputation

Linglong Qian, Yiyuan Yang, Wenjie Du +3

This study investigates the impact of masking strategies on time series imputation models in healthcare settings. While current approaches predominantly rely on random masking for…