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            <front>

                <journal-meta>
                                                                <journal-id>jista</journal-id>
            <journal-title-group>
                                                                                    <journal-title>Journal of Intelligent Systems: Theory and Applications</journal-title>
            </journal-title-group>
                                        <issn pub-type="epub">2651-3927</issn>
                                                                                            <publisher>
                    <publisher-name>Özer UYGUN</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.38016/jista.1365609</article-id>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Neural Networks</subject>
                                                            <subject>Semi- and Unsupervised Learning</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>Nöral Ağlar</subject>
                                                            <subject>Yarı ve Denetimsiz Öğrenme</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                        <article-title>SOM Clustering of OECD Countries for COVID-19 Indicators and Related Socio-economic Indicators</article-title>
                                                                                                                                        </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0002-5919-1986</contrib-id>
                                                                <name>
                                    <surname>Yıgıt</surname>
                                    <given-names>Pakize</given-names>
                                </name>
                                                                    <aff>İSTANBUL MEDİPOL ÜNİVERSİTESİ, TIP FAKÜLTESİ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20240926">
                    <day>09</day>
                    <month>26</month>
                    <year>2024</year>
                </pub-date>
                                        <volume>7</volume>
                                        <issue>2</issue>
                                        <fpage>95</fpage>
                                        <lpage>101</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20230925">
                        <day>09</day>
                        <month>25</month>
                        <year>2023</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20240405">
                        <day>04</day>
                        <month>05</month>
                        <year>2024</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2018, Journal of Intelligent Systems: Theory and Applications</copyright-statement>
                    <copyright-year>2018</copyright-year>
                    <copyright-holder>Journal of Intelligent Systems: Theory and Applications</copyright-holder>
                </permissions>
            
                                                                                                <abstract><p>The coronavirus disease is one of the most severe public health problems globally. Governments need policies to better cope with the disease, so policymakers analyze the country&#039;s indicators related to the pandemic to make proper decisions. The study aims to cluster OECD (Organisation for Economic Co-operation and Development) countries using COVID-19, health, socioeconomic, and environmental indicators. A self-organizing map (SOM) clustering method, an unsupervised artificial neural network (ANN) method and a hierarchical clustering method are used. The data comprises 38 OECD countries, and 16 different variables are selected. As a result, the countries are grouped into 3 clusters. Cluster 1 contains 33 countries, the USA is Cluster 2, and Cluster 3 has 4 countries, including Turkey. COVID-19 mortality is highly related to mortality from chronic respiratory diseases. In addition, environmental indicators show differences in clusters.</p></abstract>
                                                                                    
            
                                                            <kwd-group>
                                                    <kwd>COVID-19</kwd>
                                                    <kwd>  OECD countries</kwd>
                                                    <kwd>  Kohonen SOM</kwd>
                                                    <kwd>  clustering</kwd>
                                            </kwd-group>
                                                        
                                                                                                                                                    </article-meta>
    </front>
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