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Classifying subsets based on spatial and temporal features is crucial to the analysis of spatiotemporal data given the inherent spatial and temporal variability. Since no single clustering algorithm ensures optimal results, researchers have…

机器学习 · 计算机科学 2024-09-20 Francis Ndikum Nji , Omar Faruque , Mostafa Cham , Janeja Vandana , Jianwu Wang

In complex multivariate systems, interactions among variables are defined by dependency structures, often encoded as directed acyclic graphs ($\text{DAGs}$). However, dependency structures can vary across subjects, and ignoring this…

机器学习 · 统计学 2026-05-20 Honglin Du , Muxuan Liang , Xiang Zhong

Hypergraph partitioning is an important problem in machine learning, computer vision and network analytics. A widely used method for hypergraph partitioning relies on minimizing a normalized sum of the costs of partitioning hyperedges…

机器学习 · 计算机科学 2017-11-06 Pan Li , Olgica Milenkovic

Our problem of interest is to cluster vertices of a graph by identifying underlying community structure. Among various vertex clustering approaches, spectral clustering is one of the most popular methods because it is easy to implement…

机器学习 · 统计学 2020-09-23 Congyuan Yang , Carey E. Priebe , Youngser Park , David J. Marchette

Brain connectivity alternations associated with brain disorders have been widely reported in resting-state functional imaging (rs-fMRI) and diffusion tensor imaging (DTI). While many dual-modal fusion methods based on graph neural networks…

计算机视觉与模式识别 · 计算机科学 2024-11-14 Feiyu Yin , Yu Lei , Siyuan Dai , Wenwen Zeng , Guoqing Wu , Liang Zhan , Jinhua Yu

Recent self-supervised pre-training methods on Heterogeneous Information Networks (HINs) have shown promising competitiveness over traditional semi-supervised Heterogeneous Graph Neural Networks (HGNNs). Unfortunately, their performance…

机器学习 · 计算机科学 2023-04-13 Yaming Yang , Ziyu Guan , Zhe Wang , Wei Zhao , Cai Xu , Weigang Lu , Jianbin Huang

Single-cell RNA sequencing (scRNA-seq) is essential for unraveling cellular heterogeneity and diversity, offering invaluable insights for bioinformatics advancements. Despite its potential, traditional clustering methods in scRNA-seq data…

机器学习 · 计算机科学 2025-10-01 Ping Xu , Zhiyuan Ning , Meng Xiao , Guihai Feng , Xin Li , Yuanchun Zhou , Pengfei Wang

Hyperspectral image (HSI) clustering, which aims at dividing hyperspectral pixels into clusters, has drawn significant attention in practical applications. Recently, many graph-based clustering methods, which construct an adjacent graph to…

计算机视觉与模式识别 · 计算机科学 2022-12-07 Qi Wang , Yanling Miao , Mulin Chen , Xuelong Li

Graph-based clustering methods have demonstrated the effectiveness in various applications. Generally, existing graph-based clustering methods first construct a graph to represent the input data and then partition it to generate the…

机器学习 · 计算机科学 2019-12-17 Yuheng Jia , Hui Liu , Junhui Hou , Sam Kwong

Hyperspectral image (HSI) clustering groups pixels into clusters without labeled data, which is an important yet challenging task. For large-scale HSIs, most methods rely on superpixel segmentation and perform superpixel-level clustering…

计算机视觉与模式识别 · 计算机科学 2025-11-21 Jianhan Qi , Yuheng Jia , Hui Liu , Junhui Hou

Contrastive learning has recently attracted plenty of attention in deep graph clustering for its promising performance. However, complicated data augmentations and time-consuming graph convolutional operation undermine the efficiency of…

机器学习 · 计算机科学 2022-06-28 Yue Liu , Xihong Yang , Sihang Zhou , Xinwang Liu

Clustering analysis is fundamental in single-cell RNA sequencing (scRNA-seq) data analysis for elucidating cellular heterogeneity and diversity. Recent graph-based scRNA-seq clustering methods, particularly graph neural networks (GNNs),…

机器学习 · 计算机科学 2025-07-15 Ping Xu , Pengfei Wang , Zhiyuan Ning , Meng Xiao , Min Wu , Yuanchun Zhou

Graph clustering is a fundamental task which discovers communities or groups in networks. Recent studies have mostly focused on developing deep learning approaches to learn a compact graph embedding, upon which classic clustering methods…

机器学习 · 计算机科学 2019-06-18 Chun Wang , Shirui Pan , Ruiqi Hu , Guodong Long , Jing Jiang , Chengqi Zhang

Graph neural networks (GNNs) have emerged as the state of the art for a variety of graph-related tasks and have been widely used in Heterogeneous Graphs (HetGs), where meta-paths help encode specific semantics between various node types.…

机器学习 · 计算机科学 2025-02-25 Xuqi Mao , Zhenying He , X. Sean Wang

The human brain can be considered as complex networks, composed of various regions that continuously exchange their information with each other, forming the brain network graph, from which nodes and edges are extracted using resting-state…

机器学习 · 计算机科学 2025-02-19 Parnian Jalali , Mehran Safayani

Assessment of lesions and their longitudinal progression from brain magnetic resonance (MR) images plays a crucial role in diagnosing and monitoring multiple sclerosis (MS). Machine learning models have demonstrated a great potential for…

图像与视频处理 · 电气工程与系统科学 2024-10-03 Berke Doga Basaran , Xinru Zhang , Paul M. Matthews , Wenjia Bai

Recently, table structure recognition has achieved impressive progress with the help of deep graph models. Most of them exploit single visual cues of tabular elements or simply combine visual cues with other modalities via early fusion to…

计算机视觉与模式识别 · 计算机科学 2022-03-11 Hao Liu , Xin Li , Bing Liu , Deqiang Jiang , Yinsong Liu , Bo Ren

Many real-world data can be represented as heterogeneous graphs with different types of nodes and connections. Heterogeneous graph neural network model aims to embed nodes or subgraphs into low-dimensional vector space for various…

人工智能 · 计算机科学 2024-12-24 Xinjun Cai , Jiaxing Shang , Fei Hao , Dajiang Liu , Linjiang Zheng

Multi-view subspace clustering (MSC) is a popular unsupervised method by integrating heterogeneous information to reveal the intrinsic clustering structure hidden across views. Usually, MSC methods use graphs (or affinity matrices) fusion…

机器学习 · 计算机科学 2023-08-15 Yidi Wang , Xiaobing Pei , Haoxi Zhan

Functional connectivity (FC) derived from functional magnetic resonance imaging (fMRI) data offers vital insights for understanding brain function and neurological and psychiatric disorders. Unsupervised clustering methods are desired to…

统计方法学 · 统计学 2025-12-04 Yixi Xu , Yi Zhao