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Social bots are increasingly polluting online platforms by spreading misinformation and engaging in coordinated manipulation, posing severe threats to cybersecurity. Graph Neural Networks (GNNs) have become mainstream for social bot…

Social and Information Networks · Computer Science 2025-12-01 Zida Liu , Jun Gao , Zhang Ji , Li Zhao

Purpose: Surgery scene understanding with tool-tissue interaction recognition and automatic report generation can play an important role in intra-operative guidance, decision-making and postoperative analysis in robotic surgery. However,…

Artificial Intelligence · Computer Science 2022-11-29 Lalithkumar Seenivasan , Mobarakol Islam , Mengya Xu , Chwee Ming Lim , Hongliang Ren

Link prediction is the task of inferring missing links between entities in knowledge graphs. Embedding-based methods have shown effectiveness in addressing this problem by modeling relational patterns in triples. However, the link…

Computation and Language · Computer Science 2024-03-05 Miao Peng , Ben Liu , Qianqian Xie , Wenjie Xu , Hua Wang , Min Peng

Zero-shot learning (ZSL) aims to recognize unseen classes with zero samples by transferring semantic knowledge from seen classes. Current approaches typically correlate global visual features with semantic information (i.e., attributes) or…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Ning Wang , Long Yu , Cong Hua , Guangming Zhu , Lin Mei , Syed Afaq Ali Shah , Mohammed Bennamoun , Liang Zhang

Out-of-distribution (OOD) detection identifies test samples that differ from the training data, which is critical to ensuring the safety and reliability of machine learning (ML) systems. While a plethora of methods have been developed to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Viet Duong , Qiong Wu , Zhengyi Zhou , Eric Zavesky , Jiahe Chen , Xiangzhou Liu , Wen-Ling Hsu , Huajie Shao

Out-of-distribution (OOD) generalization has emerged as a significant challenge in graph recommender systems. Traditional graph neural network algorithms often fail because they learn spurious environmental correlations instead of stable…

Information Retrieval · Computer Science 2025-11-25 Jiahao Liang , Haoran Yang , Xiangyu Zhao , Zhiwen Yu , Mianjie Li , Chuan Shi , Kaixiang Yang

Despite widespread adoption, multimodal large language models (MLLMs) suffer performance degradation when encountering unfamiliar queries under distribution shifts. Existing methods to improve MLLM generalization typically require either…

Artificial Intelligence · Computer Science 2025-10-21 Changdae Oh , Jiatong Li , Shawn Im , Sharon Li

In self-supervised learning, multi-granular features are heavily desired though rarely investigated, as different downstream tasks (e.g., general and fine-grained classification) often require different or multi-granular features,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Pan Zhou , Yichen Zhou , Chenyang Si , Weihao Yu , Teck Khim Ng , Shuicheng Yan

Gradient-based meta-learning (GBML) algorithms are able to fast adapt to new tasks by transferring the learned meta-knowledge, while assuming that all tasks come from the same distribution (in-distribution, ID). However, in the real world,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Min Zhang , Zifeng Zhuang , Zhitao Wang , Donglin Wang , Wenbin Li

Bot detection using machine learning (ML), with network flow-level features, has been extensively studied in the literature. However, existing flow-based approaches typically incur a high computational overhead and do not completely capture…

Cryptography and Security · Computer Science 2019-02-25 Abbas Abou Daya , Mohammad A. Salahuddin , Noura Limam , Raouf Boutaba

Pre-training data detection for LLMs is essential for addressing copyright concerns and mitigating benchmark contamination. Existing methods mainly focus on the likelihood-based statistical features or heuristic signals before and after…

Computation and Language · Computer Science 2026-03-06 Ruiqi Zhang , Lingxiang Wang , Hainan Zhang , Zhiming Zheng , Yanyan Lan

Industrial recommender systems increasingly adopt multi-scenario learning (MSL) and multi-task learning (MTL) to handle diverse user interactions and contexts, but existing approaches suffer from two critical drawbacks: (1) underutilization…

Information Retrieval · Computer Science 2026-02-11 Shanlei Mu , Yuchen Jiang , Shikang Wu , Shiyong Hong , Tianmu Sha , Junjie Zhang , Jie Zhu , Zhe Chen , Zhe Wang , Jingjian Lin

Deep neural networks (DNNs) have revolutionized artificial intelligence but often lack performance when faced with out-of-distribution (OOD) data, a common scenario due to the inevitable domain shifts in real-world applications. This…

Machine Learning · Computer Science 2024-08-23 Arsham Gholamzadeh Khoee , Yinan Yu , Robert Feldt

Although recent advances in machine learning have shown its success to learn from independent and identically distributed (IID) data, it is vulnerable to out-of-distribution (OOD) data in an open world. Domain generalization (DG) deals with…

Machine Learning · Computer Science 2024-05-14 Thai-Hoang Pham , Xueru Zhang , Ping Zhang

Large-scale pre-trained Vision-Language Models (VLMs) have become essential for transfer learning across diverse tasks. However, adapting these models with limited few-shot data often leads to overfitting, diminishing their performance on…

Machine Learning · Computer Science 2025-03-27 Yuncheng Guo , Xiaodong Gu

Multimodal deep learning (MDL) has emerged as a transformative approach in computational pathology. By integrating complementary information from multiple data sources, MDL models have demonstrated superior predictive performance across…

Quantitative Methods · Quantitative Biology 2025-11-17 Seth Alain Chang , Muhammad Mueez Amjad , Noorul Wahab , Ethar Alzaid , Nasir Rajpoot , Adam Shephard

Surgical instrument segmentation in robot-assisted surgery (RAS) - especially that using learning-based models - relies on the assumption that training and testing videos are sampled from the same domain. However, it is impractical and…

Computer Vision and Pattern Recognition · Computer Science 2021-03-25 Zixu Zhao , Yueming Jin , Bo Lu , Chi-Fai Ng , Qi Dou , Yun-Hui Liu , Pheng-Ann Heng

Deep learning models exhibit limited generalizability across different domains. Specifically, transferring knowledge from available entangled domain features(source/target domain) and categorical features to new unseen categorical features…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Qingjie Meng , Daniel Rueckert , Bernhard Kainz

Multimodal sensing systems are increasingly prevalent in various real-world applications. Most existing multimodal learning approaches heavily rely on training with a large amount of synchronized, complete multimodal data. However, such a…

Machine Learning · Computer Science 2025-03-06 Xiaomin Ouyang , Jason Wu , Tomoyoshi Kimura , Yihan Lin , Gunjan Verma , Tarek Abdelzaher , Mani Srivastava

Recent years have witnessed significant progress in person re-identification (ReID). However, current ReID approaches still suffer from considerable performance degradation when unseen testing domains exhibit different characteristics from…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Shijie Yu , Feng Zhu , Dapeng Chen , Rui Zhao , Haobin Chen , Shixiang Tang , Jinguo Zhu , Yu Qiao