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A Metaheuristic Optimization Approach for Parameter Estimation in Arrhythmia Classification from Unbalanced Data
The electrocardiogram records the heart’s electrical activity and generates a significant amount of data. The analysis of these data helps us to detect diseases and disorders via heart bio-signal abnormality classification. In unbalanced-data contexts, where the classes are not equally represented,...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7308921/ https://www.ncbi.nlm.nih.gov/pubmed/32498271 http://dx.doi.org/10.3390/s20113139 |
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author | Carrillo-Alarcón, Juan Carlos Morales-Rosales, Luis Alberto Rodríguez-Rángel, Héctor Lobato-Báez, Mariana Muñoz, Antonio Algredo-Badillo, Ignacio |
author_facet | Carrillo-Alarcón, Juan Carlos Morales-Rosales, Luis Alberto Rodríguez-Rángel, Héctor Lobato-Báez, Mariana Muñoz, Antonio Algredo-Badillo, Ignacio |
author_sort | Carrillo-Alarcón, Juan Carlos |
collection | PubMed |
description | The electrocardiogram records the heart’s electrical activity and generates a significant amount of data. The analysis of these data helps us to detect diseases and disorders via heart bio-signal abnormality classification. In unbalanced-data contexts, where the classes are not equally represented, the optimization and configuration of the classification models are highly complex, reflecting on the use of computational resources. Moreover, the performance of electrocardiogram classification depends on the approach and parameter estimation to generate the model with high accuracy, sensitivity, and precision. Previous works have proposed hybrid approaches and only a few implemented parameter optimization. Instead, they generally applied an empirical tuning of parameters at a data level or an algorithm level. Hence, a scheme, including metrics of sensitivity in a higher precision and accuracy scale, deserves special attention. In this article, a metaheuristic optimization approach for parameter estimations in arrhythmia classification from unbalanced data is presented. We selected an unbalanced subset of those databases to classify eight types of arrhythmia. It is important to highlight that we combined undersampling based on the clustering method (data level) and feature selection method (algorithmic level) to tackle the unbalanced class problem. To explore parameter estimation and improve the classification for our model, we compared two metaheuristic approaches based on differential evolution and particle swarm optimization. The final results showed an accuracy of 99.95%, a F1 score of 99.88%, a sensitivity of 99.87%, a precision of 99.89%, and a specificity of 99.99%, which are high, even in the presence of unbalanced data. |
format | Online Article Text |
id | pubmed-7308921 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-73089212020-06-25 A Metaheuristic Optimization Approach for Parameter Estimation in Arrhythmia Classification from Unbalanced Data Carrillo-Alarcón, Juan Carlos Morales-Rosales, Luis Alberto Rodríguez-Rángel, Héctor Lobato-Báez, Mariana Muñoz, Antonio Algredo-Badillo, Ignacio Sensors (Basel) Article The electrocardiogram records the heart’s electrical activity and generates a significant amount of data. The analysis of these data helps us to detect diseases and disorders via heart bio-signal abnormality classification. In unbalanced-data contexts, where the classes are not equally represented, the optimization and configuration of the classification models are highly complex, reflecting on the use of computational resources. Moreover, the performance of electrocardiogram classification depends on the approach and parameter estimation to generate the model with high accuracy, sensitivity, and precision. Previous works have proposed hybrid approaches and only a few implemented parameter optimization. Instead, they generally applied an empirical tuning of parameters at a data level or an algorithm level. Hence, a scheme, including metrics of sensitivity in a higher precision and accuracy scale, deserves special attention. In this article, a metaheuristic optimization approach for parameter estimations in arrhythmia classification from unbalanced data is presented. We selected an unbalanced subset of those databases to classify eight types of arrhythmia. It is important to highlight that we combined undersampling based on the clustering method (data level) and feature selection method (algorithmic level) to tackle the unbalanced class problem. To explore parameter estimation and improve the classification for our model, we compared two metaheuristic approaches based on differential evolution and particle swarm optimization. The final results showed an accuracy of 99.95%, a F1 score of 99.88%, a sensitivity of 99.87%, a precision of 99.89%, and a specificity of 99.99%, which are high, even in the presence of unbalanced data. MDPI 2020-06-02 /pmc/articles/PMC7308921/ /pubmed/32498271 http://dx.doi.org/10.3390/s20113139 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Carrillo-Alarcón, Juan Carlos Morales-Rosales, Luis Alberto Rodríguez-Rángel, Héctor Lobato-Báez, Mariana Muñoz, Antonio Algredo-Badillo, Ignacio A Metaheuristic Optimization Approach for Parameter Estimation in Arrhythmia Classification from Unbalanced Data |
title | A Metaheuristic Optimization Approach for Parameter Estimation in Arrhythmia Classification from Unbalanced Data |
title_full | A Metaheuristic Optimization Approach for Parameter Estimation in Arrhythmia Classification from Unbalanced Data |
title_fullStr | A Metaheuristic Optimization Approach for Parameter Estimation in Arrhythmia Classification from Unbalanced Data |
title_full_unstemmed | A Metaheuristic Optimization Approach for Parameter Estimation in Arrhythmia Classification from Unbalanced Data |
title_short | A Metaheuristic Optimization Approach for Parameter Estimation in Arrhythmia Classification from Unbalanced Data |
title_sort | metaheuristic optimization approach for parameter estimation in arrhythmia classification from unbalanced data |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7308921/ https://www.ncbi.nlm.nih.gov/pubmed/32498271 http://dx.doi.org/10.3390/s20113139 |
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