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We present LSD-C, a novel method to identify clusters in an unlabeled dataset. Our algorithm first establishes pairwise connections in the feature space between the samples of the minibatch based on a similarity metric. Then it regroups in…

计算机视觉与模式识别 · 计算机科学 2020-06-18 Sylvestre-Alvise Rebuffi , Sebastien Ehrhardt , Kai Han , Andrea Vedaldi , Andrew Zisserman

In medical image analysis, multi-organ semi-supervised segmentation faces challenges such as insufficient labels and low contrast in soft tissues. To address these issues, existing studies typically employ semi-supervised segmentation…

计算机视觉与模式识别 · 计算机科学 2024-12-31 Feilong Tang , Zhongxing Xu , Ming Hu , Wenxue Li , Peng Xia , Yiheng Zhong , Hanjun Wu , Jionglong Su , Zongyuan Ge

Promoting fairness for deep clustering models in unsupervised clustering settings to reduce demographic bias is a challenging goal. This is because of the limitation of large-scale balanced data with well-annotated labels for sensitive or…

计算机视觉与模式识别 · 计算机科学 2023-09-19 Xuan-Bac Nguyen , Chi Nhan Duong , Marios Savvides , Kaushik Roy , Hugh Churchill , Khoa Luu

To cluster data is to separate samples into distinctive groups that should ideally have some cohesive properties. Today, numerous clustering algorithms exist, and their differences lie essentially in what can be perceived as ``cohesive…

机器学习 · 统计学 2025-05-08 Louis Ohl , Pierre-Alexandre Mattei , Frédéric Precioso

Image clustering is one of the crucial techniques in multimedia analytics and knowledge discovery. Recently, the Deep clustering method (DC), characterized by its ability to perform feature learning and cluster assignment jointly, surpasses…

计算机视觉与模式识别 · 计算机科学 2026-04-07 Haiyang Zheng , Ruilin Zhang , Hongpeng Wang

Clustering consists of a popular set of techniques used to separate data into interesting groups for further analysis. Many data sources on which clustering is performed are well-known to contain random and systematic measurement errors.…

机器学习 · 统计学 2020-05-26 Paulina Pankowska , Daniel L. Oberski

This work presents an unsupervised deep discriminant analysis for clustering. The method is based on deep neural networks and aims to minimize the intra-cluster discrepancy and maximize the inter-cluster discrepancy in an unsupervised…

机器学习 · 计算机科学 2022-06-13 Jinyu Cai , Wenzhong Guo , Jicong Fan

Deep clustering incorporates embedding into clustering to find a lower-dimensional space appropriate for clustering. In this paper, we propose a novel deep clustering framework with self-supervision using pairwise similarities (DCSS). The…

机器学习 · 计算机科学 2024-05-07 Mohammadreza Sadeghi , Narges Armanfard

In unsupervised machine learning, agreement between partitions is commonly assessed with so-called external validity indices. Researchers tend to use and report indices that quantify agreement between two partitions for all clusters…

机器学习 · 统计学 2019-01-08 Matthijs J. Warrens , Hanneke van der Hoef

Density Based Clustering are a type of Clustering methods using in data mining for extracting previously unknown patterns from data sets. There are a number of density based clustering methods such as DBSCAN, OPTICS, DENCLUE, VDBSCAN,…

机器学习 · 计算机科学 2023-07-25 Rupanka Bhuyan , Samarjeet Borah

Spectral Clustering(SC) is a prominent data clustering technique of recent times which has attracted much attention from researchers. It is a highly data-driven method and makes no strict assumptions on the structure of the data to be…

机器学习 · 计算机科学 2019-09-18 Lalith Srikanth Chintalapati , Raghunatha Sarma Rachakonda

Aiming at improving performance of visual classification in a cost-effective manner, this paper proposes an incremental semi-supervised learning paradigm called Deep Co-Space (DCS). Unlike many conventional semi-supervised learning methods…

计算机视觉与模式识别 · 计算机科学 2017-08-01 Ziliang Chen , Keze Wang , Xiao Wang , Pai Peng , Ebroul Izquierdo , Liang Lin

Clustering is a fundamental data mining tool that aims to divide data into groups of similar items. Generally, intuition about clustering reflects the ideal case -- exact data sets endowed with flawless dissimilarity between individual…

机器学习 · 计算机科学 2016-01-25 Margareta Ackerman , Jarrod Moore

Data-based classification is fundamental to most branches of science. While recent years have brought enormous progress in various areas of statistical computing and clustering, some general challenges in clustering remain: model selection,…

人工智能 · 计算机科学 2007-06-13 Jens Oehlschlägel

Popular clustering algorithms based on usual distance functions (e.g., Euclidean distance) often suffer in high dimension, low sample size (HDLSS) situations, where concentration of pairwise distances has adverse effects on their…

统计方法学 · 统计学 2019-05-03 Soham Sarkar , Anil K. Ghosh

We introduce a cluster evaluation technique called Tree Index. Our Tree Index algorithm aims at describing the structural information of the clustering rather than the quantitative format of cluster-quality indexes (where the representation…

机器学习 · 计算机科学 2020-03-25 A. H. Beg , Md Zahidul Islam , Vladimir Estivill-Castro

Deep clustering has gained significant attention due to its capability in learning clustering-friendly representations without labeled data. However, previous deep clustering methods tend to treat all samples equally, which neglect the…

计算机视觉与模式识别 · 计算机科学 2024-09-23 Hai-Xin Zhang , Dong Huang

Unsupervised clustering aims at discovering the semantic categories of data according to some distance measured in the representation space. However, different categories often overlap with each other in the representation space at the…

The domain of explainable AI is of interest in all Machine Learning fields, and it is all the more important in clustering, an unsupervised task whose result must be validated by a domain expert. We aim at finding a clustering that has high…

人工智能 · 计算机科学 2024-03-28 Mathieu Guilbert , Christel Vrain , Thi-Bich-Hanh Dao

Density-based clustering is the most popular clustering algorithm since it can identify clusters of arbitrary shape as long as they are separated by low-density regions. However, a high-density region that is not separated by low-density…

机器学习 · 计算机科学 2025-02-17 Hao Shu