Results 21 to 30 of about 346,399 (298)

Weighted Cluster Ensemble Based on Partition Relevance Analysis With Reduction Step

open access: yesIEEE Access, 2020
Over the last decade, the advent of the cluster ensemble framework has enabled more accurate and robust data analysis than traditional single clustering algorithms.
Nejc Ilc
doaj   +1 more source

Comparing clusterings and numbers of clusters by aggregation of calibrated clustering validity indexes [PDF]

open access: yes, 2020
A key issue in cluster analysis is the choice of an appropriate clustering method and the determination of the best number of clusters. Different clusterings are optimal on the same data set according to different criteria, and the choice of such ...
Akhanli, Serhat Emre, Hennig, Christian
core   +1 more source

A new exponential cluster validity index using Jaccard distance [PDF]

open access: yesMuṭāli̒āt-i Mudīriyyat-i Ṣan̒atī, 2012
Estimating the optimal number of clusters in an unsupervisedpartitioning of data sets has been a challenging area in recent years.These indices usually use two criteria called compactness andseparation to evaluate the efficiency of the performed ...
Mohamad Hossein Fazel Zarandi   +2 more
doaj  

Improving clustering with metabolic pathway data [PDF]

open access: yes, 2014
Background: It is a common practice in bioinformatics to validate each group returned by a clustering algorithm through manual analysis, according to a-priori biological knowledge.
Carrari, Fernando Oscar   +4 more
core   +2 more sources

Boundary Matching and Interior Connectivity-Based Cluster Validity Anlysis

open access: yesApplied Sciences, 2020
The evaluation of clustering results plays an important role in clustering analysis. However, the existing validity indices are limited to a specific clustering algorithm, clustering parameter, and assumption in practice.
Qi Li   +5 more
doaj   +1 more source

Fuzzy cluster validation using the partition negentropy criterion [PDF]

open access: yes, 2009
The final publication is available at Springer via http://dx.doi.org/10.1007/978-3-642-04277-5_24Proceedings of the 19th International Conference, Limassol, Cyprus, September 14-17, 2009We introduce the Partition Negentropy Criterion (PNC) for cluster ...
A. Samé   +22 more
core   +2 more sources

Automatic clustering method based on evolutionary optimisation

open access: yesIET Computer Vision, 2013
How to set the cluster number plays a key role in many clustering applications. To address this issue, this study introduces an automatic clustering method based on evolutionary algorithms (EAs).
Cong Liu, Aimin Zhou, Guixu Zhang
doaj   +1 more source

Model misspecification in peaks over threshold analysis

open access: yes, 2010
Classical peaks over threshold analysis is widely used for statistical modeling of sample extremes, and can be supplemented by a model for the sizes of clusters of exceedances.
Davison, Anthony C., Süveges, Mária
core   +1 more source

Fuzzy clustering with volume prototypes and adaptive cluster merging [PDF]

open access: yes, 2002
Two extensions to the objective function-based fuzzy clustering are proposed. First, the (point) prototypes are extended to hypervolumes, whose size can be fixed or can be determined automatically from the data being clustered.
Kaymak, U, Setnes, M
core   +1 more source

GMM Clustering-Based Decision Trees Considering Fault Rate and Cluster Validity for Analog Circuit Fault Diagnosis

open access: yesIEEE Access, 2019
Traditional decision trees for fault diagnosis often use an ID3 construction algorithm. For promoting the accuracy and efficiency of decision trees, considering the cluster validity and fault rates, this paper proposes two improved trees, CV-DTs and FR ...
Junyou Shi, Qingjie He, Zili Wang
doaj   +1 more source

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