Yupeng Ma — accepted AI-conference papers

2026

When Vision-Language Models Meet Fetal Cardiac Ultrasound: Dual-Level Contrastive Learning for Out-of-Distribution Detection

Ziyi Liu, Weihu Song, Yupeng Ma, Tianrui Liu, Yifan Gu, Haogang Zhu

IJCAI 2026

Recent advances in vision-language models (VLMs) have shown remarkable performance in medical image classification tasks. However, applying VLMs to fetal cardiac ultrasound (FCU) remains challenging due to compound distribution shifts, including covariate shifts caused by cross-center heterogeneity

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2025

GraphVCM: Virtual Center Mixing with Distance-Aware Regulation for Class Imbalanced Node Classification

Yixiao Ren, Yunfei Han, Yi Wang, Zhengdong Luo, Jinlong Liu, Yupeng Ma

ICASSP 2025accepted

Class imbalance is a prevalent issue in real-world graph-structure data, such as social and citation networks, posing significant challenges for Graph Neural Networks (GNNs). Existing solutions often focus on balancing class distributions via oversampling techniques, which may lead to overfitting an…

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