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Related papers: Multi-view Granular-ball Contrastive Clustering

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The linear classifier is widely used in various image classification tasks. It works by optimizing the distance between a sample and its corresponding class center. However, in real-world data, one class can contain several local clusters,…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Zhemin Zhang , Xun Gong

Incomplete Multi-View Clustering aims to enhance clustering performance by using data from multiple modalities. Despite the fact that several approaches for studying this issue have been proposed, the following drawbacks still persist: 1)…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Jiatai Wang , Zhiwei Xu , Xuewen Yang , Dongjin Guo , Limin Liu

Multi-view clustering integrates multiple feature sets, which reveal distinct aspects of the data and provide complementary information to each other, to improve the clustering performance. It remains challenging to effectively exploit…

Machine Learning · Computer Science 2020-07-28 Shi-Xun Lina , Guo Zhongb , Ting Shu

Multi-instance point cloud registration is the problem of estimating multiple poses of source point cloud instances within a target point cloud. Solving this problem is challenging since inlier correspondences of one instance constitute…

Computer Vision and Pattern Recognition · Computer Science 2022-09-02 Mingzhi Yuan , Zhihao Li , Qiuye Jin , Xinrong Chen , Manning Wang

Contrastive learning is among the most successful methods for visual representation learning, and its performance can be further improved by jointly performing clustering on the learned representations. However, existing methods for joint…

Computer Vision and Pattern Recognition · Computer Science 2022-09-16 Shunjie-Fabian Zheng , JaeEun Nam , Emilio Dorigatti , Bernd Bischl , Shekoofeh Azizi , Mina Rezaei

This paper studies the problem of class-imbalanced graph classification, which aims at effectively classifying the graph categories in scenarios with imbalanced class distributions. While graph neural networks (GNNs) have achieved…

Machine Learning · Computer Science 2024-12-31 Wei Ju , Zhengyang Mao , Siyu Yi , Yifang Qin , Yiyang Gu , Zhiping Xiao , Jianhao Shen , Ziyue Qiao , Ming Zhang

Self-Supervised Contrastive Learning has proven effective in deriving high-quality representations from unlabeled data. However, a major challenge that hinders both unimodal and multimodal contrastive learning is feature suppression, a…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Jihai Zhang , Xiang Lan , Xiaoye Qu , Yu Cheng , Mengling Feng , Bryan Hooi

Most of the existing clustering methods are based on a single granularity of information, such as the distance and density of each data. This most fine-grained based approach is usually inefficient and susceptible to noise. Therefore, we…

Machine Learning · Computer Science 2023-03-30 Jiang Xie , Shuyin Xia , Guoyin Wang , Xinbo Gao

Although previous graph-based multi-view clustering algorithms have gained significant progress, most of them are still faced with three limitations. First, they often suffer from high computational complexity, which restricts their…

Machine Learning · Computer Science 2023-03-23 Si-Guo Fang , Dong Huang , Xiao-Sha Cai , Chang-Dong Wang , Chaobo He , Yong Tang

Existing granular-ball classification methods are often driven by handcrafted quality measures, neighborhood rules, or heuristic splitting and stopping criteria, which may reduce the transparency of local construction decisions and hinder…

Machine Learning · Computer Science 2026-05-13 Zeqiang Xian , Caihui Liu , Yong Zhang , Wenjing Qiu , Duoqian Miao , Witold Pedrycz

Graph contrastive learning (GCL) has attracted a surge of attention due to its superior performance for learning node/graph representations without labels. However, in practice, the underlying class distribution of unlabeled nodes for the…

Machine Learning · Computer Science 2023-05-04 Liang Zeng , Lanqing Li , Ziqi Gao , Peilin Zhao , Jian Li

This paper focuses on unpaired multi-view clustering (UMC), a challenging problem where paired observed samples are unavailable across multiple views. The goal is to perform effective joint clustering using the unpaired observed samples in…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Like Xin , Wanqi Yang , Lei Wang , Ming Yang

Standard contrastive learning approaches usually require a large number of negatives for effective unsupervised learning and often exhibit slow convergence. We suspect this behavior is due to the suboptimal selection of negatives used for…

Machine Learning · Computer Science 2021-12-22 Anshul Shah , Suvrit Sra , Rama Chellappa , Anoop Cherian

For infrastructure inspections, damage representation does not constantly match the predefined classes of damage grade, resulting in detailed clusters of unseen damages or more complex clusters from overlapped space between two grades. The…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Takato Yasuno , Masahiro Okano , Junichiro Fujii

Hashing techniques, also known as binary code learning, have recently gained increasing attention in large-scale data analysis and storage. Generally, most existing hash clustering methods are single-view ones, which lack complete structure…

Computer Vision and Pattern Recognition · Computer Science 2019-12-12 Guangqi Jiang , Huibing Wang , Jinjia Peng , Dongyan Chen , Xianping Fu

Contrastive learning predicts whether two images belong to the same category by training a model to make their feature representations as close or as far away as possible. In this paper, we rethink how to mine samples in contrastive…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Hengkui Dong , Xianzhong Long , Yun Li

Subspace clustering aims to group data points that lie in a union of low-dimensional subspaces and finds wide application in computer vision, hyperspectral imaging, and recommendation systems. However, most existing methods assume fully…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Huanran Li , Daniel Pimentel-Alarcón

We introduce Contrastive Gaussian Clustering, a novel approach capable of provide segmentation masks from any viewpoint and of enabling 3D segmentation of the scene. Recent works in novel-view synthesis have shown how to model the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Myrna C. Silva , Mahtab Dahaghin , Matteo Toso , Alessio Del Bue

Intra-class variability is given according to the significance in the degree of dissimilarity between images within a class. In that sense, depending on its intensity, intra-class variability can hinder the learning process for DL models,…

Artificial Intelligence · Computer Science 2025-12-24 Luciano Araujo Dourado Filho , Rodrigo Tripodi Calumby

Multi-document question generation focuses on generating a question that covers the common aspect of multiple documents. Such a model is useful in generating clarifying options. However, a naive model trained only using the targeted…

Computation and Language · Computer Science 2021-05-19 Woon Sang Cho , Yizhe Zhang , Sudha Rao , Asli Celikyilmaz , Chenyan Xiong , Jianfeng Gao , Mengdi Wang , Bill Dolan