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Graph anomaly detection (GAD) aims to identify anomalous graphs that significantly deviate from other ones, which has raised growing attention due to the broad existence and complexity of graph-structured data in many real-world scenarios.…

Machine Learning · Computer Science 2024-02-21 Jinyu Cai , Yunhe Zhang , Zhoumin Lu , Wenzhong Guo , See-kiong Ng

Appearance variations result in many difficulties in face image analysis. To deal with this challenge, we present a Unified Tensor-based Active Appearance Model (UT-AAM) for jointly modelling the geometry and texture information of 2D…

Computer Vision and Pattern Recognition · Computer Science 2017-06-14 Zhen-Hua Feng , Josef Kittler , William Christmas , Xiao-Jun Wu

Foundation models like ChatGPT and GPT-4 have revolutionized artificial intelligence, exhibiting remarkable abilities to generalize across a wide array of tasks and applications beyond their initial training objectives. However, graph…

Machine Learning · Computer Science 2025-01-22 Yufei He , Yuan Sui , Xiaoxin He , Bryan Hooi

The task of visual dialog requires a multimodal chatbot to answer sequential questions from humans about image content. Prior work performs the standard likelihood training for answer generation on the positive instances (involving correct…

Computation and Language · Computer Science 2022-11-28 Zihao Wang , Junli Wang , Changjun Jiang

In recent years, significant progress has been made in both image generation and generated image detection. Despite their rapid, yet largely independent, development, these two fields have evolved distinct architectural paradigms: the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Yanran Zhang , Wenzhao Zheng , Yifei Li , Bingyao Yu , Yu Zheng , Lei Chen , Jiwen Lu , Jie Zhou

Real-world knowledge graphs (KGs) contain not only standard triple-based facts, but also more complex, heterogeneous types of facts, such as hyper-relational facts with auxiliary key-value pairs, temporal facts with additional timestamps,…

Computation and Language · Computer Science 2026-03-09 Zhiqiang Liu , Yin Hua , Mingyang Chen , Yichi Zhang , Zhuo Chen , Lei Liang , Wen Zhang

Face presentation attack detection (PAD) has become a thorny problem for biometric systems and numerous countermeasures have been proposed to address it. However, majority of them directly extract feature descriptors and distinguish fake…

Computer Vision and Pattern Recognition · Computer Science 2018-11-13 Lei Li , Zhaoqiang Xia , Xiaoyue Jiang , Fabio Roli , Xiaoyi Feng

Unified multimodal models aim to jointly enable visual understanding and generation, yet current benchmarks rarely examine their true integration. Existing evaluations either treat the two abilities in isolation or overlook tasks that…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Kai Zou , Ziqi Huang , Yuhao Dong , Shulin Tian , Dian Zheng , Hongbo Liu , Jingwen He , Bin Liu , Yu Qiao , Ziwei Liu

Since Facial Action Unit (AU) annotations require domain expertise, common AU datasets only contain a limited number of subjects. As a result, a crucial challenge for AU detection is addressing identity overfitting. We find that AUs and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-26 Zhipeng Hu , Wei Zhang , Lincheng Li , Yu Ding , Wei Chen , Zhigang Deng , Xin Yu

Federated learning (FL) enables privacy-preserving collaborative model training but remains vulnerable to adversarial behaviors that compromise model utility or fairness across sensitive groups. While extensive studies have examined attacks…

Machine Learning · Computer Science 2025-11-13 Yanli Li , Yanan Zhou , Zhongliang Guo , Nan Yang , Yuning Zhang , Huaming Chen , Dong Yuan , Weiping Ding , Witold Pedrycz

Malicious applications of visual manipulation have raised serious threats to the security and reputation of users in many fields. To alleviate these issues, adversarial noise-based defenses have been enthusiastically studied in recent…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Dawei Zhou , Suzhi Gang , Decheng Liu , Tongliang Liu , Nannan Wang , Xinbo Gao

The increasing prevalence of adversarial attacks on Artificial Intelligence (AI) systems has created a need for innovative security measures. However, the current methods of defending against these attacks often come with a high computing…

Cryptography and Security · Computer Science 2024-08-09 Duo Zhong , Bojing Li , Xiang Chen , Chenchen Liu

Recent advances in multi-modal generative models have driven substantial improvements in image editing. However, current generative models still struggle with handling diverse and complex image editing tasks that require implicit reasoning,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Feng Han , Yibin Wang , Chenglin Li , Zheming Liang , Dianyi Wang , Yang Jiao , Zhipeng Wei , Chao Gong , Cheng Jin , Jingjing Chen , Jiaqi Wang

Deep Neural Networks are vulnerable to adversarial examples, i.e., carefully crafted input samples that can cause models to make incorrect predictions with high confidence. To mitigate these vulnerabilities, adversarial training and…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Francesco Villani , Igor Maljkovic , Dario Lazzaro , Angelo Sotgiu , Antonio Emanuele Cinà , Fabio Roli

High-quality annotated images are significant to deep facial expression recognition (FER) methods. However, uncertain labels, mostly existing in large-scale public datasets, often mislead the training process. In this paper, we achieve…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Yang Liu , Xingming Zhang , Janne Kauttonen , Guoying Zhao

Generative self-supervised learning on graphs, particularly graph masked autoencoders, has emerged as a popular learning paradigm and demonstrated its efficacy in handling non-Euclidean data. However, several remaining issues limit the…

Machine Learning · Computer Science 2024-02-14 Yijun Tian , Chuxu Zhang , Ziyi Kou , Zheyuan Liu , Xiangliang Zhang , Nitesh V. Chawla

We introduce MMaDA, a novel class of multimodal diffusion foundation models designed to achieve superior performance across diverse domains such as textual reasoning, multimodal understanding, and text-to-image generation. The approach is…

Computer Vision and Pattern Recognition · Computer Science 2025-09-26 Ling Yang , Ye Tian , Bowen Li , Xinchen Zhang , Ke Shen , Yunhai Tong , Mengdi Wang

Autonomous driving (AD) systems struggle in long-tail scenarios due to limited world knowledge and weak visual dynamic modeling. Existing vision-language-action (VLA)-based methods cannot leverage unlabeled videos for visual causal…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Hao Lu , Ziyang Liu , Guangfeng Jiang , Yuanfei Luo , Sheng Chen , Yangang Zhang , Ying-Cong Chen

Despite the rapid advance of unsupervised anomaly detection, existing methods require to train separate models for different objects. In this work, we present UniAD that accomplishes anomaly detection for multiple classes with a unified…

Computer Vision and Pattern Recognition · Computer Science 2022-10-26 Zhiyuan You , Lei Cui , Yujun Shen , Kai Yang , Xin Lu , Yu Zheng , Xinyi Le

Visual Tracking is a complex problem due to unconstrained appearance variations and dynamic environment. Extraction of complementary information from the object environment via multiple features and adaption to the target's appearance…

Computer Vision and Pattern Recognition · Computer Science 2019-05-27 Kapil Sharma , Himanshu Ahuja , Ashish Kumar , Nipun Bansal , Gurjit Singh Walia
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