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            <front>

                <journal-meta>
                                    <journal-id></journal-id>
            <journal-title-group>
                                                                                    <journal-title>Yönetim Bilişim Sistemleri Dergisi</journal-title>
            </journal-title-group>
                            <issn pub-type="ppub">2630-550X</issn>
                                        <issn pub-type="epub">2630-550X</issn>
                                                                                            <publisher>
                    <publisher-name>Dokuz Eylul University</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id/>
                                                                                                                                                                                            <title-group>
                                                                                                                        <article-title>TWITTER MESAJLARI ÜZERINDE MAKİNE ÖĞRENMESİ YÖNTEMLERİNE DAYALI DUYGU ANALİZİ</article-title>
                                                                                                                                                                                                <trans-title-group xml:lang="en">
                                    <trans-title>SENTIMENT ANALYSIS ON TWITTER MESSAGES BASED ON MACHINE LEARNING METHODS</trans-title>
                                </trans-title-group>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                <name>
                                    <surname>Onan</surname>
                                    <given-names>Aytuğ</given-names>
                                </name>
                                                                    <aff>CELÂL BAYAR ÜNİVERSİTESİ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20171220">
                    <day>12</day>
                    <month>20</month>
                    <year>2017</year>
                </pub-date>
                                        <volume>3</volume>
                                        <issue>2</issue>
                                        <fpage>1</fpage>
                                        <lpage>14</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20171116">
                        <day>11</day>
                        <month>16</month>
                        <year>2017</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20171123">
                        <day>11</day>
                        <month>23</month>
                        <year>2017</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2015, </copyright-statement>
                    <copyright-year>2015</copyright-year>
                    <copyright-holder></copyright-holder>
                </permissions>
            
                                                                                                <abstract><p>Twitter, insanlarıngüncel konular hakkında görüş bildirdikleri önemli bir sosyal mecradır. Twitterkullanıcılarının yaptıkları paylaşım ve görüş bildirimleri, araştırmacı veuygulayıcılar için önemli bir bilgi kaynağı olarak işlev görmektedir. Twitterverileri, güncel olayları belirleme, yaygın hastalıklar hakkında bilgi toplama,kriz yönetimi gibi birçok farklı alanda kullanılabilmektedir. Duygu analizi,doğal dil işleme, istatistik, bilgisayar bilimleri gibi alanlardan yöntem vetekniklerin kullanılması ile görüş sahibinin metin içerisinde belirttiği,duygu, görüş, tutum gibi öznel bilgilerin belirlenmesini amaçlayan güncel biraraştırma alanıdır. Makine öğrenmesi sınıflandırıcıları, aralarında duyguanalizinin de yer aldığı, metin madenciliği ve web madenciliğine ilişkin birçokalanda başarıyla uygulanmaktadır. Metin sınıflandırıcılarının başarımlarında,ham metin belgelerinin temsil edilmesinde kullanılan öznitelikler büyük önemtaşımaktadır. Bu doğrultuda, bu çalışma kapsamında Türkçe Twitter mesajlarınınsınıflandırılmasında, üç temel makine öğrenmesi sınıflandırıcısı (Naive Bayesalgoritması, destek vektör makineleri, lojistik regresyon) kullanılmıştır.Metin temsilinde, farklı öznitelik temsili (1-gram, 2-gram ve 3-gram) ve buöznitelik temsilleri ile elde edilen farklı öznitelik setlerideğerlendirilmiştir.</p></abstract>
                                                                                                                                    <trans-abstract xml:lang="en">
                            <p>Twitter is an important social platform, in whichpeople can share their opinions about current issues. The opinions and ideasshared on Twitter can serve as an important source of information forresearchers and practitioners. The data available on Twitter can be used toidentify current events, to collect information about epidemic diseases and tosupport crisis management. Sentiment analysis is a recent research direction,which utilizes tools and techniques from several fields, such as naturallanguage processing, statistics and computer science, to identify thesubjective information of opinion holders. Machine learning classifiers havebeen successfully employed in several different application fields of text andweb mining, including sentiment analysis. The representation schemes utilizedto represent raw text documents are essential for the predictive performance oftext classifiers. In this regard, three well-known machine learning classifiers(Naïve Bayes algorithm, support vector machines and logistic regression) onTurkish Twitter messages. In order to represent text documents, differentfeature representation schemes (1-gram, 2-gram and 3-gram) and their subsetsare evaluated.</p></trans-abstract>
                                                            
            
                                                            <kwd-group>
                                                    <kwd>Duygu Analizi</kwd>
                                                    <kwd>  N-Gram</kwd>
                                                    <kwd>  Makine Öğrenmesi</kwd>
                                            </kwd-group>
                                                        
                                                                            <kwd-group xml:lang="en">
                                                    <kwd>: Sentiment Analysis</kwd>
                                                    <kwd>  N-Gram</kwd>
                                                    <kwd>  Machine Learning</kwd>
                                            </kwd-group>
                                                                                                            </article-meta>
    </front>
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