Results 21 to 30 of about 843,626 (294)

Overlapping Multi-hop Clustering for Wireless Sensor Networks [PDF]

open access: yes, 2009
Clustering is a standard approach for achieving efficient and scalable performance in wireless sensor networks. Traditionally, clustering algorithms aim at generating a number of disjoint clusters that satisfy some criteria. In this paper, we formulate a
Younis, Mohamed   +2 more
core   +1 more source

An Improvement of Spectral Clustering via Message Passing and Density Sensitive Similarity

open access: yesIEEE Access, 2019
Spectral clustering transforms the data clustering problem into a graph-partitioning problem and classifies data points by finding the optimal sub-graphs. Traditional spectral clustering algorithms use Gaussian kernel function to construct the similarity
Lijuan Wang, Shifei Ding, Hongjie Jia
doaj   +1 more source

Unifying Sparsest Cut, Cluster Deletion, and Modularity Clustering Objectives with Correlation Clustering [PDF]

open access: yes, 2018
Graph clustering, or community detection, is the task of identifying groups of closely related objects in a large network. In this paper we introduce a new community-detection framework called LambdaCC that is based on a specially weighted version of ...
Gleich, David   +2 more
core   +2 more sources

Constrained Clustering Problems [PDF]

open access: yes, 1998
In the paper a view, based on the optimization approach, is given on different types of constrained clustering problems and methods for their solution.
Vladimir Batagelj, Anuška Ferligoj
openaire   +1 more source

Clustering benchmark datasets exploiting the fundamental clustering problems

open access: yesData in Brief, 2020
The Fundamental Clustering Problems Suite (FCPS) offers a variety of clustering challenges that any algorithm should be able to handle given real-world data. The FCPS consists of datasets with known a priori classifications that are to be reproduced by the algorithm.
Michael C. Thrun, Alfred Ultsch
openaire   +3 more sources

Wind and Photovoltaic Generation Scene Division Based on Improved K-means Clustering

open access: yes发电技术, 2020
In view of the uncertainty of power generation in renewable energy, especially wind power and photovoltaic power generation, the improved K-means clustering method was used to segment the state of power generation.
Xuewei SONG, Yuyao LIU
doaj   +1 more source

Sparse Subspace Learning Based on Learnable Constraints for Image Clustering

open access: yesIEEE Access, 2023
Sparse subspace clustering is a widely used method for clustering high dimensional data, but the traditional method is complex and requires prior information that can be difficult to obtain in unsupervised scenarios.
Siyuan Zhao
doaj   +1 more source

Optimal clustering of frequency-constrained maintenance jobs with shared set-ups [PDF]

open access: yes, 1997
Since maintenance jobs often require one or more set-up activities, joint execution or clustering of maintenance jobs is a powerful instrument to reduce shut-down costs.
Dijkhuizen, Gerhard van   +1 more
core   +2 more sources

Research on improved region division method in underground WLAN location fingerprints positioning

open access: yesGong-kuang zidonghua, 2020
Underground WLAN location fingerprinting personnel positioning system mainly realizes overall division of location fingerprinting samples through clustering algorithm, but existing clustering algorithm only carries out the clustering division according ...
SONG Mingzhi   +2 more
doaj   +1 more source

An Improved Three-Way Clustering Based on Ensemble Strategy

open access: yesMathematics, 2022
As a powerful data analysis technique, clustering plays an important role in data mining. Traditional hard clustering uses one set with a crisp boundary to represent a cluster, which cannot solve the problem of inaccurate decision-making caused by ...
Tingfeng Wu, Jiachen Fan, Pingxin Wang
doaj   +1 more source

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