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Yuyuan Liu

13 accepted papers

2026

From Failure to Feedback: Group Revision Unlocks Hard Cases in Object-Level Grounding

CVPR 2026

Finetuning Large Vision-Language Models with reinforcement learning has emerged as a promising approach to enhance their capability in object-level grounding. However, existing methods, mainly based on GRPO, assign rewards at the response level. Such sparse reward leads to minimal learning signals w

Cited by 0SourcecodeScholar
2026

MEDCUTMIX: A DATA-CENTRIC APPROACH TO IMPROVE RADIOLOGY VISION-LANGUAGE PRE-TRAINING WITH DISEASE AWARENESS

ICASSP 2026oral

Vision-Language Pre-training (VLP) is drawing increasing interest for its ability to minimize manual annotation requirements while enhancing semantic understanding in downstream tasks. However, its reliance on image-text datasets poses challenges due to privacy concerns and the high cost of obtainin…

Cited by 0SourcePDFScholar
2026

POUR: A Provably Optimal Method for Unlearning Representation via Neural Collapse

CVPR 2026

In computer vision, machine unlearning aims to remove the influence of specific visual concepts or training images without retraining from scratch. Studies show that existing approaches often modify the classifier while leaving internal representations intact, resulting in incomplete forgetting.In t

Cited by 0SourcecodeScholar
2025

Agentic Reasoning: A Streamlined Framework for Enhancing LLM Reasoning with Agentic Tools

ACL 2025long

We introduce Agentic Reasoning, a framework that enhances large language model (LLM) reasoning by integrating external tool-using agents. Agentic Reasoning dynamically leverages web search, code execution, and structured memory to address complex problems requiring deep research. A key innovation in…

Cited by 0SourcePDFScholar
2025

Ask Patients with Patience: Enabling LLMs for Human-Centric Medical Dialogue with Grounded Reasoning

EMNLP 2025

The severe shortage of medical doctors limits access to timely and reliable healthcare, leaving millions underserved. Large language models (LLMs) offer a potential solution but struggle in real-world clinical interactions. Many LLMs are not grounded in authoritative medical guidelines and fail to t

Cited by 0SourcePDFScholar
2024

CPM: Class-conditional Prompting Machine for Audio-visual Segmentation

ECCV 2024poster

"Audio-visual segmentation (AVS) is an emerging task that aims to accurately segment sounding objects based on audio-visual cues. The success of AVS learning systems depends on the effectiveness of cross-modal interaction. Such a requirement can be naturally fulfilled by leveraging transformer-based…

Cited by 2SourcePDFScholar
2024

Unraveling Instance Associations: A Closer Look for Audio-Visual Segmentation

CVPR 2024poster

Audio-visual segmentation (AVS) is a challenging task that involves accurately segmenting sounding objects based on audio-visual cues. The effectiveness of audio-visual learning critically depends on achieving accurate cross-modal alignment between sound and visual objects. Successful audio-visual l…

2023

BoMD: Bag of Multi-label Descriptors for Noisy Chest X-ray Classification

ICCV 2023poster

Deep learning methods have shown outstanding classification accuracy in medical imaging problems, which is largely attributed to the availability of large-scale datasets manually annotated with clean labels. However, given the high cost of such manual annotation, new medical imaging classification p…

Cited by 10PDFcodeScholar
2023

Learning Support and Trivial Prototypes for Interpretable Image Classification

ICCV 2023poster

Prototypical part network (ProtoPNet) methods have been designed to achieve interpretable classification by associating predictions with a set of training prototypes, which we refer to as trivial prototypes because they are trained to lie far from the classification boundary in the feature space. No…

Cited by 30PDFcodeScholar
2023

Residual Pattern Learning for Pixel-Wise Out-of-Distribution Detection in Semantic Segmentation

ICCV 2023poster

Semantic segmentation models classify pixels into a set of known ("in-distribution") visual classes. When deployed in an open world, the reliability of these models depends on their ability to not only classify in-distribution pixels but also to detect out-of-distribution (OoD) pixels. Historicall…

Cited by 45PDFcodeScholar
2022

ACPL: Anti-Curriculum Pseudo-Labelling for Semi-Supervised Medical Image Classification

CVPR 2022poster

Effective semi-supervised learning (SSL) in medical image analysis (MIA) must address two challenges: 1) work effectively on both multi-class (e.g., lesion classification) and multi-label (e.g., multiple-disease diagnosis) problems, and 2) handle imbalanced learning (because of the high variance in…

Cited by 124PDFcodeScholar
2022

Perturbed and Strict Mean Teachers for Semi-Supervised Semantic Segmentation

CVPR 2022poster

Consistency learning using input image, feature, or network perturbations has shown remarkable results in semi-supervised semantic segmentation, but this approach can be seriously affected by inaccurate predictions of unlabelled training images. There are two consequences of these inaccurate predict…

Cited by 293PDFcodeScholar
2022

Pixel-Wise Energy-Biased Abstention Learning for Anomaly Segmentation on Complex Urban Driving Scenes

ECCV 2022poster

"State-of-the-art (SOTA) anomaly segmentation approaches on complex urban driving scenes explore pixel-wise classification uncertainty learned from outlier exposure, or external reconstruction models. However, previous uncertainty approaches that directly associate high uncertainty to anomaly may so…