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            <front>

                <journal-meta>
                                                                <journal-id>ui̇i̇i̇d</journal-id>
            <journal-title-group>
                                                                                    <journal-title>Uluslararası İktisadi ve İdari İncelemeler Dergisi</journal-title>
            </journal-title-group>
                            <issn pub-type="ppub">1307-9832</issn>
                                        <issn pub-type="epub">1307-9859</issn>
                                                                                            <publisher>
                    <publisher-name>Kenan ÇELİK</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.18092/ulikidince.351487</article-id>
                                                                                                                                                                                            <title-group>
                                                                                                                        <trans-title-group xml:lang="en">
                                    <trans-title>PORTFOLIO OPTIMIZATION BASED ON HIGHER ORDER MOMENTS AND FUZZY ENTROPY</trans-title>
                                </trans-title-group>
                                                                                                                                                                                                <article-title>YÜKSEK DERECEDEN MOMENTLER VE BULANIK ENTROPİYE DAYALI PORTFÖY OPTİMİZASYONU</article-title>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                <name>
                                    <surname>Pala</surname>
                                    <given-names>Osman</given-names>
                                </name>
                                                                    <aff>DOKUZ EYLÜL ÜNİVERSİTESİ, İKTİSADİ VE İDARİ BİLİMLER FAKÜLTESİ</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                <name>
                                    <surname>Aksaraylı</surname>
                                    <given-names>Mehmet</given-names>
                                </name>
                                                                    <aff>DOKUZ EYLÜL ÜNİVERSİTESİ, İKTİSADİ VE İDARİ BİLİMLER FAKÜLTESİ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20180118">
                    <day>01</day>
                    <month>18</month>
                    <year>2018</year>
                </pub-date>
                                                                <fpage>415</fpage>
                                        <lpage>432</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20171113">
                        <day>11</day>
                        <month>13</month>
                        <year>2017</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20180115">
                        <day>01</day>
                        <month>15</month>
                        <year>2018</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2008, Uluslararası İktisadi ve İdari İncelemeler Dergisi</copyright-statement>
                    <copyright-year>2008</copyright-year>
                    <copyright-holder>Uluslararası İktisadi ve İdari İncelemeler Dergisi</copyright-holder>
                </permissions>
            
                                                                                                <trans-abstract xml:lang="en">
                            <p>The effectiveness of the mean variance model, which isbased on the assumption that the historical returns are normally distributed,falls when the series of stock returns do not follow a normal distribution. In order to increase the efficiency of themodel and to cover the properties of the return series’ distribution better,higher order moments are added to the model. Mean variance model and itsvariants are often facing another problem, corner solutions that models oftenproduce. Entropy function is used to prevent accumulation incertain stocks and to increase natural diversity. Entropy functions, however,can be far from the decision maker&#039;s point of view and can also produce resultsthat dominate other objective functions. In the study, a new mean-variance-skewness-kurtosis-fuzzy entropyportfolio selection model with a new defined fuzzy entropy has been proposed toovercome the problems mentioned and experiments was performed on two real datasets to show the effectiveness of the proposed model with using variousportfolio objectives and preferences of decision makers. Entropy and fuzzy entropyare compared in basis of portfolio models which have higher moments. Resultspresent that proposed fuzzy entropy approach is better-suited especially withhigher-moment portfolio models.</p></trans-abstract>
                                                                                                                                    <abstract><p>Tarihselgetirilerin normal dağıldığı varsayımına dayanan ortalama varyans modelininetkinliği, hisse senetleri getiri serileri normal dağılım göstermediğindedüşmektedir. Modelin etkinliğini artırmak ve getiri serilerinin dağılışını dahaiyi modele aktarabilmek için yüksek dereceden momentler modele eklenmektedir.Ortalama varyans modeli ve varyantlarının bir başka karşılaştığı problem isemodellerin sıklıkla ürettiği köşe çözümlerdir. Belirli hisse senetlerineyığılmayı önlemek ve doğal çeşitliliği artırmak için entropi fonksiyonukullanılmaktadır. Fakat entropi fonksiyonları karar vericinin bakış açısındanuzak ve diğer amaç fonksiyonlarına baskınlık kuran sonuçlar üretebilmektedir.Çalışmada, değinilen sorunları aşmak için yeni bir bulanık entropitanımlanmış, yeni bir ortalama-varyans-çarpıklık-basıklık-bulanıkentropi portföy seçim modeli önerilmiş ve önerilen modelin etkililiğinigöstermek için, iki gerçek veri seti üzerindeki deneyler, çeşitli portföyhedefleri ve karar vericilerin tercihleri kullanılarak gerçekleştirilmiştir.Entropi ve bulanık entropi, amaç fonksiyonu olarak yüksek momentleri içerenportföy modelleri açısından karşılaştırılmıştır. Bulgular, önerilen bulanıkentropi yaklaşımının, özellikle yüksek dereceden momentli portföy modelleriiçin daha uygun olduğunu göstermektedir.</p></abstract>
                                                            
            
                                                                                        <kwd-group>
                                                    <kwd>portföy optimizasyonu</kwd>
                                                    <kwd>  yüksek dereceden momentler</kwd>
                                                    <kwd>  entropi</kwd>
                                                    <kwd>  bulanık entropi</kwd>
                                            </kwd-group>
                            
                                                <kwd-group xml:lang="en">
                                                    <kwd>Portfolio optimization</kwd>
                                                    <kwd>  higher order moments</kwd>
                                                    <kwd>  entropy</kwd>
                                                    <kwd>  fuzzy entropy</kwd>
                                            </kwd-group>
                                                                                                                                        </article-meta>
    </front>
    <back>
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