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Chengyu Liu

4 accepted papers

2026

EmotionHallucer: Evaluating Emotion Hallucinations in Multimodal Large Language Models

ICLR 2026poster

Emotion understanding is a critical yet challenging task. Recent advances in Multimodal Large Language Models (MLLMs) have significantly enhanced their capabilities in this area. However, MLLMs often suffer from ``hallucinations'', generating irrelevant or nonsensical content. To the best of our kn…

Cited by 0SourcecodeScholar
2026

Taming the Loss Landscape of PINNs with Noisy Feynman–Kac Supervision: Operator Preconditioning and Non-Asymptotic Error Bounds

ICML 2026poster

Physics-Informed Neural Networks (PINNs) often train slowly or fail to converge on challenging partial differential equations (PDEs), a behavior recently linked to severely ill-conditioned loss landscapes inherited from the underlying differential operator. We propose FK-PINNs, a simple modification…

Cited by 0SourceScholar
2024

Learning with Noisy Labels Using Hyperspherical Margin Weighting

AAAI 2024technical

Datasets often include noisy labels, but learning from them is difficult. Since mislabeled examples usually have larger loss values in training, the small-loss trick is regarded as a standard metric to identify the clean example from the training set for better performance. Nonetheless, this proposa…

2021

Deep Balanced Learning for Long-tailed Facial Expressions Recognition

ICRA 2021poster

The analysis of facial expression is a very complex and challenging problem. Most researches for automated Facial Expression Recognition (FER) are mainly based on deep learning networks, rarely considering data imbalance. This paper commits to addressing the long-tail distribution problems among lar…

Cited by 7SourcecodeScholar