<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.4 20241031//EN"
        "https://jats.nlm.nih.gov/publishing/1.4/JATS-journalpublishing1-4.dtd">
<article  article-type="research-article"        dtd-version="1.4">
            <front>

                <journal-meta>
                                                                <journal-id>osmaniye korkut ata university journal of the institute of science and techno</journal-id>
            <journal-title-group>
                                                                                    <journal-title>Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi</journal-title>
            </journal-title-group>
                            <issn pub-type="ppub">2687-3729</issn>
                                                                                                        <publisher>
                    <publisher-name>Osmaniye Korkut Ata Üniversitesi</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.47495/okufbed.1217550</article-id>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Mathematical Sciences</subject>
                                                            <subject>Industrial Engineering</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>Matematik</subject>
                                                            <subject>Endüstri Mühendisliği</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                        <article-title>Ortogonal Olabilirlik Ortalama - Varyans Modeli</article-title>
                                                                                                                                                                                                <trans-title-group xml:lang="en">
                                    <trans-title>Orthogonal Possibilistic Mean - Variance Model</trans-title>
                                </trans-title-group>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0001-9291-3912</contrib-id>
                                                                <name>
                                    <surname>Göktaş</surname>
                                    <given-names>Furkan</given-names>
                                </name>
                                                                    <aff>KARABÜK ÜNİVERSİTESİ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20231220">
                    <day>12</day>
                    <month>20</month>
                    <year>2023</year>
                </pub-date>
                                        <volume>6</volume>
                                        <issue>Ek Sayı</issue>
                                        <fpage>29</fpage>
                                        <lpage>41</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20221214">
                        <day>12</day>
                        <month>14</month>
                        <year>2022</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20230428">
                        <day>04</day>
                        <month>28</month>
                        <year>2023</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2018, Osmaniye Korkut Ata University Journal of the Institute of Science and Technology</copyright-statement>
                    <copyright-year>2018</copyright-year>
                    <copyright-holder>Osmaniye Korkut Ata University Journal of the Institute of Science and Technology</copyright-holder>
                </permissions>
            
                                                                                                <abstract><p>Olabilirlik teorisi, portföy seçimi probleminde en çok kullanılan araçlardan biridir. Çünkü kesin olmayan olasılığın modellenmesine ve uzman bilgisinin portföy seçimi problemine entegre edilmesine imkan verir. Ama olabilirlik ortalama - varyans (OV) modelinin ve bunun uzantılarının bazı sorunları vardır. Bu nedenle bu çalışmada kesin konveks kuadratik minimizasyona dayanan ortogonal olabilirlik OV modeli önerilmiştir. Ayrıca olabilirlik dağılımları üçgensel bulanık sayılar ile verildiğinde olabilirlik çarpıklığı tanımlanmıştır. Olabilirlik çarpıklığı önerilen modele kısıt olarak eklenebilir. Bu modelin analitik çözümü belirli şartlar altında elde edilmiştir. Ayrıca bu model açıklayıcı bir örnek ile tanıtılmıştır ve bu modelin sonuçları Olabilirlik OV modelinin sonuçları ile karşılaştırılmıştır.</p></abstract>
                                                                                                                                    <trans-abstract xml:lang="en">
                            <p>The possibility theory is one of the most used tools in portfolio selection problem. Because, it enables to model imprecise probability and integrate expert knowledge into portfolio selection problem. However, there are some problems in the possibilistic mean - variance (MV) model and its extensions. Therefore, in this study, we propose an orthogonal possibilistic MV model based on strictly convex quadratic minimization. We also define possibilistic skewness when possibility distributions are given with triangular fuzzy numbers. The possibilistic skewness can be added to the proposed model as a constraint. We derive its analytical solution under certain conditions. We also illustrate it with an explanatory example and compare its results with the results of the possibilistic MV model.</p></trans-abstract>
                                                            
            
                                                            <kwd-group>
                                                    <kwd>Portföy seçimi</kwd>
                                                    <kwd>  Olabilirlik teorisi</kwd>
                                                    <kwd>  Üçgensel bulanık sayılar</kwd>
                                                    <kwd>  Konveks kuadratik minimizasyon</kwd>
                                                    <kwd>  Uzman bilgisi</kwd>
                                                    <kwd>  Olabilirlik çarpıklığı</kwd>
                                            </kwd-group>
                                                        
                                                                            <kwd-group xml:lang="en">
                                                    <kwd>Portfolio selection</kwd>
                                                    <kwd>  Possibility theory</kwd>
                                                    <kwd>  Triangular fuzzy numbers</kwd>
                                                    <kwd>  Convex quadratic minimization</kwd>
                                                    <kwd>  Expert knowledge</kwd>
                                                    <kwd>  Possibilistic skewness</kwd>
                                            </kwd-group>
                                                                                                        <funding-group specific-use="FundRef">
                    <award-group>
                                                    <funding-source>
                                <named-content content-type="funder_name">Yok</named-content>
                            </funding-source>
                                                                            <award-id>Yok</award-id>
                                            </award-group>
                </funding-group>
                                </article-meta>
    </front>
    <back>
                            <ref-list>
                                    <ref id="ref1">
                        <label>1</label>
                        <mixed-citation publication-type="journal">Ali MY., Sultana A., Khan AFMK. Comparison of fuzzy multiplication operation on triangular fuzzy number. IOSR Journal of Mathematics 2016; 12(4-I): 35-41.</mixed-citation>
                    </ref>
                                    <ref id="ref2">
                        <label>2</label>
                        <mixed-citation publication-type="journal">Carlsson C., Fullér R., Majlender P. A possibilistic approach to selecting portfolios with highest utility score. Fuzzy Sets and Systems 2002; 131(1): 13-21.</mixed-citation>
                    </ref>
                                    <ref id="ref3">
                        <label>3</label>
                        <mixed-citation publication-type="journal">Corazza M., Nardelli C. Possibilistic mean–variance portfolios versus probabilistic ones: the winner is. Decisions in Economics and Finance 2019; 42(1): 51-75.</mixed-citation>
                    </ref>
                                    <ref id="ref4">
                        <label>4</label>
                        <mixed-citation publication-type="journal">Fullér R., Mezei J., Várlaki P. An improved index of interactivity for fuzzy numbers. Fuzzy Sets and Systems 2011; 165(1), 50-60.</mixed-citation>
                    </ref>
                                    <ref id="ref5">
                        <label>5</label>
                        <mixed-citation publication-type="journal">Gill PE., Wong E. Methods for convex and general quadratic programming. Mathematical Programming Computation 2015; 7(1): 71-112.</mixed-citation>
                    </ref>
                                    <ref id="ref6">
                        <label>6</label>
                        <mixed-citation publication-type="journal">Goldfarb D., Iyengar G. Robust portfolio selection problems. Mathematics of Operations Research 2003; 28(1): 1-38.</mixed-citation>
                    </ref>
                                    <ref id="ref7">
                        <label>7</label>
                        <mixed-citation publication-type="journal">Gong X., Min L., Yu C.. Multi-period portfolio selection under the coherent fuzzy environment with dynamic risk-tolerance and expected-return levels. Applied Soft Computing 2022; 114: 108104.</mixed-citation>
                    </ref>
                                    <ref id="ref8">
                        <label>8</label>
                        <mixed-citation publication-type="journal">Göktaş F., Duran A. A new possibilistic mean-variance model based on the principal components analysis: an application on the Turkish Holding Stocks. Journal of Multiple-Valued Logic &amp; Soft Computing 2019; 32(5-6): 455-476.</mixed-citation>
                    </ref>
                                    <ref id="ref9">
                        <label>9</label>
                        <mixed-citation publication-type="journal">Göktaş F., Duran A. Olabilirlik ortalama–varyans modelinin matematiksel analizi. Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi 2020; 22(1): 80-91.</mixed-citation>
                    </ref>
                                    <ref id="ref10">
                        <label>10</label>
                        <mixed-citation publication-type="journal">Gupta P., Mehlawat MK., Yadav S., Kumar A. Intuitionistic fuzzy optimistic and pessimistic multi-period portfolio optimization models. Soft Computing 2020; 24(16): 11931-11956.</mixed-citation>
                    </ref>
                                    <ref id="ref11">
                        <label>11</label>
                        <mixed-citation publication-type="journal">Li X., Guo S., Yu L. Skewness of fuzzy numbers and its applications in portfolio selection. IEEE Transactions on Fuzzy Systems 2015; 23(6): 2135-2143.</mixed-citation>
                    </ref>
                                    <ref id="ref12">
                        <label>12</label>
                        <mixed-citation publication-type="journal">Markowitz H. Portfolio selection. The Journal of Finance 1952; 7(1): 77-91.</mixed-citation>
                    </ref>
                                    <ref id="ref13">
                        <label>13</label>
                        <mixed-citation publication-type="journal">Pasha E., Saeidifar A., Asady B. The percentiles of fuzzy numbers and their applications. Iranian Journal of Fuzzy Systems 2009; 6(1): 27-44.</mixed-citation>
                    </ref>
                                    <ref id="ref14">
                        <label>14</label>
                        <mixed-citation publication-type="journal">Tanaka H., Guo P. Portfolio selection based on upper and lower exponential possibility distributions. European Journal of Operational Research 1999; 114(1): 115-126.</mixed-citation>
                    </ref>
                                    <ref id="ref15">
                        <label>15</label>
                        <mixed-citation publication-type="journal">Tanaka H., Guo P., Türksen IB. Portfolio selection based on fuzzy probabilities and possibility distributions. Fuzzy Sets and Systems 2000; 111(3): 387-397.</mixed-citation>
                    </ref>
                                    <ref id="ref16">
                        <label>16</label>
                        <mixed-citation publication-type="journal">Taş O., Kahraman C., Güran CB. A scenario based linear fuzzy approach in portfolio selection problem: application in the Istanbul Stock Exchange. Journal of Multiple-Valued Logic &amp; Soft Computing 2016; 26(3-5): 269-294.</mixed-citation>
                    </ref>
                                    <ref id="ref17">
                        <label>17</label>
                        <mixed-citation publication-type="journal">Tütüncü RH., Koenig M. Robust asset allocation. Annals of Operations Research 2004; 132(1): 157-187.</mixed-citation>
                    </ref>
                                    <ref id="ref18">
                        <label>18</label>
                        <mixed-citation publication-type="journal">Yang XY., Chen SD., Liu WL., Zhang, Y. A multi-period fuzzy portfolio optimization model with short selling constraints. International Journal of Fuzzy Systems 2022; 24(6): 2798–2812.</mixed-citation>
                    </ref>
                                    <ref id="ref19">
                        <label>19</label>
                        <mixed-citation publication-type="journal">Zhang WG. Possibilistic mean–standard deviation models to portfolio selection for bounded assets. Applied Mathematics and Computation 2007; 189(2): 1614-1623.</mixed-citation>
                    </ref>
                                    <ref id="ref20">
                        <label>20</label>
                        <mixed-citation publication-type="journal">Zhang WG., Wang YL., Chen ZP., Nie ZK. Possibilistic mean-variance models and efficient frontiers for portfolio selection problem. Information Sciences 2007; 177(13): 2787–2801.</mixed-citation>
                    </ref>
                                    <ref id="ref21">
                        <label>21</label>
                        <mixed-citation publication-type="journal">Zhang WG., Zhang XL., Xiao WL. Portfolio selection under possibilistic mean–variance utility and a SMO algorithm. European Journal of Operational Research 2009; 197(2): 693-700.</mixed-citation>
                    </ref>
                            </ref-list>
                    </back>
    </article>
