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Graph clustering, a classical task in graph learning, involves partitioning the nodes of a graph into distinct clusters. This task has applications in various real-world scenarios, such as anomaly detection, social network analysis, and…

机器学习 · 计算机科学 2024-08-09 Xiaoyang Ji , Yuchen Zhou , Haofu Yang , Shiyue Xu , Jiahao Li

Contrastive learning is commonly applied to self-supervised learning, and has been shown to outperform traditional approaches such as the triplet loss and N-pair loss. However, the requirement of large batch sizes and memory banks has made…

计算机视觉与模式识别 · 计算机科学 2022-08-15 Rishab Balasubramanian , Rupashree Dey , Kunal Rathore

Self-supervised graph representation learning has recently shown considerable promise in a range of fields, including bioinformatics and social networks. A large number of graph contrastive learning approaches have shown promising…

机器学习 · 计算机科学 2024-01-30 Wei Ju , Yiyang Gu , Zhengyang Mao , Ziyue Qiao , Yifang Qin , Xiao Luo , Hui Xiong , Ming Zhang

Turn-level user satisfaction is one of the most important performance metrics for conversational agents. It can be used to monitor the agent's performance and provide insights about defective user experiences. Moreover, a powerful…

机器学习 · 计算机科学 2021-04-13 Mohammad Kachuee , Hao Yuan , Young-Bum Kim , Sungjin Lee

The graph with complex annotations is the most potent data type, whose constantly evolving motivates further exploration of the unsupervised dynamic graph representation. One of the representative paradigms is graph contrastive learning. It…

机器学习 · 计算机科学 2024-12-20 Yiming Xu , Bin Shi , Teng Ma , Bo Dong , Haoyi Zhou , Qinghua Zheng

Urban traffic forecasting is a commonly encountered problem, with wide-ranging applications in fields such as urban planning, civil engineering and transport. In this paper, we study the enhancement of traffic forecasting with pre-training,…

机器学习 · 计算机科学 2025-03-20 Matthew Low , Arian Prabowo , Hao Xue , Flora Salim

Multi-modality spatio-temporal (MoST) data extends spatio-temporal (ST) data by incorporating multiple modalities, which is prevalent in monitoring systems, encompassing diverse traffic demands and air quality assessments. Despite…

机器学习 · 计算机科学 2024-05-07 Jiewen Deng , Renhe Jiang , Jiaqi Zhang , Xuan Song

Occlusions, complex backgrounds, scale variations and non-uniform distributions present great challenges for crowd counting in practical applications. In this paper, we propose a novel method using an attention model to exploit head…

计算机视觉与模式识别 · 计算机科学 2018-06-28 Youmei Zhang , Chunluan Zhou , Faliang Chang , Alex C. Kot

The prior self-supervised learning researches mainly select image-level instance discrimination as pretext task. It achieves a fantastic classification performance that is comparable to supervised learning methods. However, with degraded…

计算机视觉与模式识别 · 计算机科学 2022-05-11 Bing Zhao , Jun Li , Hong Zhu

Currently, most crowd counting methods have outstanding performance under normal weather conditions. However, our experimental validation reveals two key obstacles limiting the accuracy improvement of crowd counting models: 1) the domain…

计算机视觉与模式识别 · 计算机科学 2025-05-09 Tianhang Pan , Xiuyi Jia

Currently, the safety of people has become a very important problem in different places including subway station, universities, colleges, airport, shopping mall and square, city squares. Therefore, considering intelligence event detection…

计算机视觉与模式识别 · 计算机科学 2020-08-11 Constantinou Miti , Demetriou Zatte , Siraj Sajid Gondal

Modern, state-of-the-art deep learning approaches yield human like performance in numerous object detection and classification tasks. The foundation for their success is the availability of training datasets of substantially high quantity,…

Self-supervised learning (SSL) has emerged as a powerful approach to learning representations, particularly in the field of computer vision. However, its application to dependent data, such as temporal and spatio-temporal domains, remains…

机器学习 · 计算机科学 2025-10-01 Alexander Marusov , Aleksandr Yugay , Alexey Zaytsev

In the realm of autonomous driving, accurate 3D perception is the foundation. However, developing such models relies on extensive human annotations -- a process that is both costly and labor-intensive. To address this challenge from a data…

计算机视觉与模式识别 · 计算机科学 2024-07-11 Xiang Xu , Lingdong Kong , Hui Shuai , Wenwei Zhang , Liang Pan , Kai Chen , Ziwei Liu , Qingshan Liu

Crowd density level estimation is an essential aspect of crowd safety since it helps to identify areas of probable overcrowding and required conditions. Nowadays, AI systems can help in various sectors. Here for safety purposes or many for…

密码学与安全 · 计算机科学 2024-05-14 Mahira Arefin , Md. Anwar Hussen Wadud , Anichur Rahman

We study the problem of traffic forecasting, aiming to predict the inflow and outflow of a region in the subsequent time slot. The problem is complex due to the intricate spatial and temporal interdependence among regions. Prior works study…

人工智能 · 计算机科学 2025-11-12 Zheng Chenghong , Zongyin Deng , Liu Cheng , Xiong Simin , Di Deshi , Li Guanyao

Self-supervised methods have shown remarkable progress in learning high-level semantics and low-level temporal correspondence. Building on these results, we take one step further and explore the possibility of integrating these two features…

计算机视觉与模式识别 · 计算机科学 2024-03-22 Rui Qian , Shuangrui Ding , Xian Liu , Dahua Lin

Recently, self-supervised learning has attracted great attention, since it only requires unlabeled data for model training. Contrastive learning is one popular method for self-supervised learning and has achieved promising empirical…

机器学习 · 计算机科学 2023-03-03 Weiran Huang , Mingyang Yi , Xuyang Zhao , Zihao Jiang

Ensuring validation for highly automated driving poses significant obstacles to the widespread adoption of highly automated vehicles. Scenario-based testing offers a potential solution by reducing the homologation effort required for these…

机器学习 · 计算机科学 2023-09-19 Maximilian Zipfl , Moritz Jarosch , J. Marius Zöllner

In recent years, the integration of non-topological space modeling with temporal learning methods has emerged as an effective approach for capturing spatio-temporal information in non-Euclidean graphs. However, most existing methods rely on…

机器学习 · 计算机科学 2026-05-08 Mei Wu , Wenchao Weng , Wenxin Su , Wenjie Tang , Wei Zhou