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Accurately estimating the normalization term (also known as the partition function) in the contrastive loss is a central challenge for training Contrastive Language-Image Pre-training (CLIP) models. Conventional methods rely on large…

机器学习 · 计算机科学 2026-03-05 Xiyuan Wei , Chih-Jen Lin , Tianbao Yang

Multimodal LLMs are powerful but prone to object hallucinations, which describe non-existent entities and harm reliability. While recent unlearning methods attempt to mitigate this, we identify a critical flaw: structural fragility. We…

机器学习 · 计算机科学 2026-05-19 Xianya Fang , Feiyang Ren , Xiang Chen , Yu Tian , Zhen Bi , Haiyang Yu , Sheng-Jun Huang

In recent years, we have witnessed the great advancement of Deep neural networks (DNNs) in image restoration. However, a critical limitation is that they cannot generalize well to real-world degradations with different degrees or types. In…

计算机视觉与模式识别 · 计算机科学 2023-04-03 Xin Li , Bingchen Li , Xin Jin , Cuiling Lan , Zhibo Chen

Neural implicit representations have shown remarkable abilities in jointly modeling geometry, color, and camera poses in simultaneous localization and mapping (SLAM). Current methods use coordinates, positional encodings, or other geometry…

计算机视觉与模式识别 · 计算机科学 2024-12-24 Sijia Jiang , Jing Hua , Zhizhong Han

A Rotating Modulator (RM) is one of a class of techniques for indirect imaging of an object scene by modulation and detection of incident photons. Comparison of the RM to more common imaging techniques, the Rotating Modulation Collimator…

天体物理仪器与方法 · 物理学 2010-10-14 B. Budden , G. L. Case , M. L. Cherry

Vision-Language Models (VLMs) achieve strong cross-modal performance, yet recent evidence suggests they over-rely on textual descriptions while under-utilizing visual evidence -- a phenomenon termed ``text shortcut learning.'' We propose an…

计算机视觉与模式识别 · 计算机科学 2026-04-21 Lijie Zhou

Contrastive Language-Image Pre-training (CLIP) has been a celebrated method for training vision encoders to generate image/text representations facilitating various applications. Recently, CLIP has been widely adopted as the vision backbone…

计算机视觉与模式识别 · 计算机科学 2025-02-20 Hong-You Chen , Zhengfeng Lai , Haotian Zhang , Xinze Wang , Marcin Eichner , Keen You , Meng Cao , Bowen Zhang , Yinfei Yang , Zhe Gan

Retrieval-Augmented Generation (RAG) systems remain susceptible to hallucinations despite grounding in retrieved evidence. While current detection methods leverage embedding similarity and natural language inference (NLI), their reliability…

机器学习 · 计算机科学 2025-12-22 Debu Sinha

Empirical risk minimization (ERM) can be computationally expensive, with standard solvers scaling poorly even in the convex setting. We propose a novel lossless compression framework for convex ERM based on color refinement, extending prior…

最优化与控制 · 数学 2026-02-03 Bryan Zhu , Ziang Chen

With the rise of powerful pre-trained vision-language models like CLIP, it becomes essential to investigate ways to adapt these models to downstream datasets. A recently proposed method named Context Optimization (CoOp) introduces the…

计算机视觉与模式识别 · 计算机科学 2022-10-07 Kaiyang Zhou , Jingkang Yang , Chen Change Loy , Ziwei Liu

Large language models (LLMs) often solve challenging math exercises yet fail to apply the concept right when the problem requires genuine understanding. Popular Reinforcement Learning with Verifiable Rewards (RLVR) pipelines reinforce final…

人工智能 · 计算机科学 2026-05-08 Zijun Gao , Zhikun Xu , Xiao Ye , Ben Zhou

Factual inconsistencies in generated summaries severely limit the practical applications of abstractive dialogue summarization. Although significant progress has been achieved by using pre-trained models, substantial amounts of hallucinated…

Large Vision-Language Models (LVLMs) are susceptible to object hallucinations, an issue in which their generated text contains non-existent objects, greatly limiting their reliability and practicality. Current approaches often rely on the…

计算机视觉与模式识别 · 计算机科学 2024-04-24 Ailin Deng , Zhirui Chen , Bryan Hooi

We consider the problem of supervised learning with convex loss functions and propose a new form of iterative regularization based on the subgradient method. Unlike other regularization approaches, in iterative regularization no constraint…

机器学习 · 统计学 2015-04-02 Junhong Lin , Lorenzo Rosasco , Ding-Xuan Zhou

Large-scale language-vision pre-training models, such as CLIP, have achieved remarkable text-guided image morphing results by leveraging several unconditional generative models. However, existing CLIP-guided image morphing methods encounter…

计算机视觉与模式识别 · 计算机科学 2024-01-22 Yeongtak Oh , Saehyung Lee , Uiwon Hwang , Sungroh Yoon

Recent segmentation methods, such as OCR and CPNet, utilizing "class level" information in addition to pixel features, have achieved notable success for boosting the accuracy of existing network modules. However, the extracted class-level…

计算机视觉与模式识别 · 计算机科学 2022-07-15 Ye Huang , Di Kang , Liang Chen , Xuefei Zhe , Wenjing Jia , Xiangjian He , Linchao Bao

Effective clinical deployment of deep learning models in healthcare demands high generalization performance to ensure accurate diagnosis and treatment planning. In recent years, significant research has focused on improving the…

图像与视频处理 · 电气工程与系统科学 2025-10-22 Mohamed Hassan , Aleksandar Vakanski , Min Xian

Recent studies have noted an intriguing phenomenon termed Neural Collapse, that is, when the neural networks establish the right correlation between feature spaces and the training targets, their last-layer features, together with the…

计算机视觉与模式识别 · 计算机科学 2025-09-22 Yining Wang , Junjie Sun , Chenyue Wang , Mi Zhang , Min Yang

Contrastive Language-Image Pre-training (CLIP) excels in global alignment with language but exhibits limited sensitivity to spatial information, leading to strong performance in zero-shot classification tasks but underperformance in tasks…

计算机视觉与模式识别 · 计算机科学 2025-04-04 Congpei Qiu , Yanhao Wu , Wei Ke , Xiuxiu Bai , Tong Zhang

Semantic segmentation has recently achieved notable advances by exploiting "class-level" contextual information during learning. However, these approaches simply concatenate class-level information to pixel features to boost the pixel…

计算机视觉与模式识别 · 计算机科学 2023-01-12 Ye Huang , Di Kang , Liang Chen , Wenjing Jia , Xiangjian He , Lixin Duan , Xuefei Zhe , Linchao Bao