This paper introduces a type of mean-variance model for portfolio selection problem, in which the security returns are assumed to be fuzzy variables. To solve the portfolio problem, this paper applies the variance formulas to the proposed model so that the original optimization problem can be reduced to the deterministic one, which can be solved by applying Kuhn-Tucker (K-T) conditions. A numerical example is presented to demonstrate the proposed method.
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Islamic Azad Univ, Dept Ind Engn, South Tehran Branch, Tehran 1584743311, IranIslamic Azad Univ, Dept Ind Engn, South Tehran Branch, Tehran 1584743311, Iran
Zahedirad, Mostafa
Khalili-Damghani, Kaveh
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Islamic Azad Univ, Dept Ind Engn, South Tehran Branch, Tehran 1584743311, IranIslamic Azad Univ, Dept Ind Engn, South Tehran Branch, Tehran 1584743311, Iran
Khalili-Damghani, Kaveh
Ghezavati, Vahidreza
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Islamic Azad Univ, Dept Ind Engn, South Tehran Branch, Tehran 1584743311, IranIslamic Azad Univ, Dept Ind Engn, South Tehran Branch, Tehran 1584743311, Iran
Ghezavati, Vahidreza
Komijan, Alireza Rashidi
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Islamic Azad Univ, Dept Ind Engn, Sci & Res Branch, Tehran 1477893855, IranIslamic Azad Univ, Dept Ind Engn, South Tehran Branch, Tehran 1584743311, Iran