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Brain network analysis plays an increasingly important role in studying brain function and the exploring of disease mechanisms. However, existing brain network construction tools have some limitations, including dependency on empirical…

Neurons and Cognition · Quantitative Biology 2024-07-29 Yongcheng Zong , Shuqiang Wang

Natural language understanding (NLU) models often rely on dataset biases rather than intended task-relevant features to achieve high performance on specific datasets. As a result, these models perform poorly on datasets outside the training…

Computation and Language · Computer Science 2023-01-05 Yougang Lyu , Piji Li , Yechang Yang , Maarten de Rijke , Pengjie Ren , Yukun Zhao , Dawei Yin , Zhaochun Ren

All applications in fifth-generation (5G) networks rely on stable radio-frequency (RF) environments to support mission-critical services in mobility, automation, and connected intelligence. Their exposure to intentional interference or…

Signal Processing · Electrical Eng. & Systems 2026-03-10 Vojtech Halenka , Mohammadreza Amini , Per-Arne Andersen , Ole-Christoffer Granmo , Burak Kantarci

High-dimensional feature spaces in particle physics events pose a fundamental challenge to density-estimation-based weakly supervised anomaly detection, whose fidelity degrades rapidly with an increasing number of dimensions. We propose a…

High Energy Physics - Phenomenology · Physics 2026-03-30 Runze Li , Benjamin Nachman , Dennis Noll

Contrastive learning has demonstrated promising potential in recommender systems. Existing methods typically construct sparser views by randomly perturbing the original interaction graph, as they have no idea about the authentic user…

Information Retrieval · Computer Science 2025-12-19 Xufeng Liang , Zhida Qin , Chong Zhang , Tianyu Huang , Gangyi Ding

Graph Neural Networks (GNNs) have received extensive research attention due to their powerful information aggregation capabilities. Despite the success of GNNs, most of them suffer from the popularity bias issue in a graph caused by a small…

Machine Learning · Computer Science 2024-08-02 Yuntao Shou , Haozhi Lan , Xiangyong Cao

Contrastive learning methods based on InfoNCE loss are popular in node representation learning tasks on graph-structured data. However, its reliance on data augmentation and its quadratic computational complexity might lead to inconsistency…

Machine Learning · Computer Science 2022-12-12 Hengrui Zhang , Qitian Wu , Yu Wang , Shaofeng Zhang , Junchi Yan , Philip S. Yu

Graph contrastive learning (GCL) is an effective paradigm for node representation learning in graphs. The key components hidden behind GCL are data augmentation and positive-negative pair selection. Typical data augmentations in GCL, such…

Machine Learning · Computer Science 2024-07-25 Jiaqiang Zhang , Songcan Chen

The effectiveness of contrastive learning methods has been widely recognized in the field of graph learning, especially in contexts where graph data often lack labels or are difficult to label. However, the application of these methods to…

Machine Learning · Computer Science 2026-01-16 Qiang Yu , Xinran Cheng , Shiqiang Xu , Chuanyi Liu

Contrastive Learning (CL) has shown promising performance in collaborative filtering. The key idea is to generate augmentation-invariant embeddings by maximizing the Mutual Information between different augmented views of the same instance.…

Information Retrieval · Computer Science 2024-01-01 Huiyuan Chen , Vivian Lai , Hongye Jin , Zhimeng Jiang , Mahashweta Das , Xia Hu

We describe a method for unpaired realistic depth synthesis that learns diverse variations from the real-world depth scans and ensures geometric consistency between the synthetic and synthesized depth. The synthesized realistic depth can…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Yuefan Shen , Yanchao Yang , Youyi Zheng , C. Karen Liu , Leonidas Guibas

This paper investigates the anti-jamming channel access problem in complex and unknown jamming environments, where the jammer could dynamically adjust its strategies to target different channels. Traditional channel hopping anti-jamming…

Machine Learning · Computer Science 2025-12-29 Jianshu Zhang , Xiaofu Wu , Junquan Hu

Graph contrastive learning (GCL) aims to align the positive features while differentiating the negative features in the latent space by minimizing a pair-wise contrastive loss. As the embodiment of an outstanding discriminative unsupervised…

Machine Learning · Computer Science 2023-12-27 Jiangmeng Li , Yifan Jin , Hang Gao , Wenwen Qiang , Changwen Zheng , Fuchun Sun

Graph contrastive learning (GCL) has emerged as a promising approach to enhance graph neural networks' (GNNs) ability to learn rich representations from unlabeled graph-structured data. However, current GCL models face challenges with…

Machine Learning · Computer Science 2025-03-11 Yujia Wu , Junyi Mo , Elynn Chen , Yuzhou Chen

Object detection is an important task in remote sensing image analysis. To reduce the computational complexity of redundant information and improve the efficiency of image processing, visual saliency models have been widely applied in this…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Zhou Huang , Huai-Xin Chen , Tao Zhou , Yun-Zhi Yang , Chang-Yin Wang , Bi-Yuan Liu

Large language models (LLMs) are advanced AI systems applied across various domains, including NLP, information retrieval, and recommendation systems. Despite their adaptability and efficiency, LLMs have not been extensively explored for…

Artificial Intelligence · Computer Science 2025-07-08 Harshith Manjunath , Lucas Heublein , Tobias Feigl , Felix Ott

Towards sixth-generation networks (6G), satellite communication systems, especially based on Low Earth Orbit (LEO) networks, become promising due to their unique and comprehensive capabilities. These advantages are accompanied by a variety…

Signal Processing · Electrical Eng. & Systems 2021-07-14 Selen Gecgel , Gunes Karabulut Kurt

Packet loss concealment (PLC) is challenging in concealing missing contents both plausibly and naturally when there are only limited available context to use. Recently deep-learning based PLC algorithms have demonstrated their superiority…

Sound · Computer Science 2023-02-28 Huaying Xue , Xiulian Peng , Yan Lu

Leading graph contrastive learning (GCL) methods perform graph augmentations in two fashions: (1) randomly corrupting the anchor graph, which could cause the loss of semantic information, or (2) using domain knowledge to maintain salient…

Machine Learning · Computer Science 2022-06-17 Sihang Li , Xiang Wang , An zhang , Yingxin Wu , Xiangnan He , Tat-Seng Chua

Graph contrastive learning (GCL) has emerged as a representative paradigm in graph self-supervised learning, where negative samples are commonly regarded as the key to preventing model collapse and producing distinguishable representations.…

Machine Learning · Computer Science 2023-12-06 Wangbin Sun , Jintang Li , Liang Chen , Bingzhe Wu , Yatao Bian , Zibin Zheng