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Many real-world clustering problems are plagued by incomplete data characterized by missing or absent features for some or all of the data instances. Traditional clustering methods cannot be directly applied to such data without…

机器学习 · 计算机科学 2018-07-10 Shounak Datta , Supritam Bhattacharjee , Swagatam Das

Clustering analysis is of substantial significance for data mining. The properties of big data raise higher demand for more efficient and economical distributed clustering methods. However, existing distributed clustering methods mainly…

分布式、并行与集群计算 · 计算机科学 2023-07-03 Yifeng Xiao , Jiang Xue , Deyu Meng

The performance of supervised classification techniques often deteriorates when the data has noisy labels. Even the semi-supervised classification approaches have largely focused only on the problem of handling missing labels. Most of the…

机器学习 · 计算机科学 2022-05-05 Ashit Gupta , Anirudh Deodhar , Tathagata Mukherjee , Venkataramana Runkana

Algebraic Subspace Clustering (ASC) is a simple and elegant method based on polynomial fitting and differentiation for clustering noiseless data drawn from an arbitrary union of subspaces. In practice, however, ASC is limited to…

计算机视觉与模式识别 · 计算机科学 2015-10-16 Manolis C. Tsakiris , Rene Vidal

Multiple datasets containing different types of features may be available for a given task. For instance, users' profiles can be used to group users for recommendation systems. In addition, a model can also use users' historical behaviors…

机器学习 · 计算机科学 2016-05-10 Weixiang Shao , Xiaoxiao Shi , Philip S. Yu

The goal of clustering is to group similar objects into meaningful partitions. This process is well understood when an explicit similarity measure between the objects is given. However, far less is known when this information is not readily…

机器学习 · 计算机科学 2020-10-12 Michaël Perrot , Pascal Mattia Esser , Debarghya Ghoshdastidar

We present a structural clustering algorithm for large-scale datasets of small labeled graphs, utilizing a frequent subgraph sampling strategy. A set of representatives provides an intuitive description of each cluster, supports the…

数据库 · 计算机科学 2016-10-03 Till Schäfer , Petra Mutzel

Deep Learning (DL) has shown great promise in the unsupervised task of clustering. That said, while in classical (i.e., non-deep) clustering the benefits of the nonparametric approach are well known, most deep-clustering methods are…

机器学习 · 计算机科学 2022-03-29 Meitar Ronen , Shahaf E. Finder , Oren Freifeld

In this paper we present novel algorithms for several multidimensional data processing problems. We consider problems related to the computation of restricted clusters and of the diameter of a set of points using a new distance function. We…

数据结构与算法 · 计算机科学 2010-09-14 Mugurel Ionut Andreica , Eliana-Dina Tirsa

Graph-based clustering methods like spectral clustering and SpectralNet are very efficient in detecting clusters of non-convex shapes. Unlike the popular $k$-means, graph-based clustering methods do not assume that each cluster has a single…

机器学习 · 计算机科学 2023-02-28 Mashaan Alshammari , John Stavrakakis , Masahiro Takatsuka

Subspace clustering is the problem of clustering data that lie close to a union of linear subspaces. In the abstract form of the problem, where no noise or other corruptions are present, the data are assumed to lie in general position…

计算机视觉与模式识别 · 计算机科学 2020-02-13 Manolis C. Tsakiris , Rene Vidal

Cluster analysis is one of the essential tasks in data mining and knowledge discovery. Each type of data poses unique challenges in achieving relatively efficient partitioning of the data into homogeneous groups. While the algorithms for…

机器学习 · 计算机科学 2018-12-11 Ruben A. Gevorgyan , Yenok B. Hakobyan

The main contribution of this paper is the development of a new decision tree algorithm. The proposed approach allows users to guide the algorithm through the data partitioning process. We believe this feature has many applications but in…

机器学习 · 统计学 2020-10-27 Cédric Beaulac , Jeffrey S. Rosenthal

Clustering is a fundamental task in the computer vision and machine learning community. Although various methods have been proposed, the performance of existing approaches drops dramatically when handling incomplete high-dimensional data…

计算机视觉与模式识别 · 计算机科学 2021-03-23 Mingjie Luo , Siwei Wang , Xinwang Liu , Wenxuan Tu , Yi Zhang , Xifeng Guo , Sihang Zhou , En Zhu

Clustering high-dimensional data is a critical challenge in machine learning due to the curse of dimensionality and the presence of noise. Traditional clustering algorithms often fail to capture the intrinsic structures in such data. This…

机器学习 · 计算机科学 2025-03-21 Joanikij Chulev , Angela Mladenovska

The goal of fair clustering is to find clusters such that the proportion of sensitive attributes (e.g., gender, race, etc.) in each cluster is similar to that of the entire dataset. Various fair clustering algorithms have been proposed that…

机器学习 · 统计学 2026-02-26 Jinwon Park , Kunwoong Kim , Jihu Lee , Yongdai Kim

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

Finding meaningful groups, i.e., clusters, in high-dimensional data such as images or texts without labeled data at hand is an important challenge in data mining. In recent years, deep clustering methods have achieved remarkable results in…

机器学习 · 计算机科学 2024-10-15 Collin Leiber , Niklas Strauß , Matthias Schubert , Thomas Seidl

Imputation of missing attribute values in medical datasets for extracting hidden knowledge from medical datasets is an interesting research topic of interest which is very challenging. One cannot eliminate missing values in medical records.…

数据库 · 计算机科学 2016-03-11 Yelipe UshaRani , P. Sammulal

The $k$-means algorithm is arguably the most popular nonparametric clustering method but cannot generally be applied to datasets with incomplete records. The usual practice then is to either impute missing values under an assumed…

机器学习 · 统计学 2018-09-11 Andrew Lithio , Ranjan Maitra