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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/6025

Title: Fuzzy compromise programming for portfolio selection
Author(s): Bilbao Terol, Amelia María
Pérez Gladish, Blanca María
Arenas Parra, María del Mar
Rodríguez Uría, María Victoria
Keywords: Portfolio Selection; Fuzzy Sets; Fuzzy Compromise Programming; Discrepancy Between Fuzzy Numbers
Issue date: 2006
Publisher version: http://dx.doi.org/10.1016/j.amc.2005.04.003
Citation: Applied Mathematics and Computation, 173(1), P. 251-264 (2006); doi:10.1016/j.amc.2005.04.003
Format extent: 251-264
Abstract: The aim of this paper is to solve a portfolio selection problem using Sharpe’s single index model in a soft framework. Estimations of subjective or imprecise future beta for every asset can be represented through fuzzy numbers constructed on the basis of statistical data and the relevant knowledge of the financial analyst; the model, therefore, works with data that contain more information than any classical model and dealing with it does not involve a great extra computational effort. In order to solve the portfolio selection problem we have formulated a Fuzzy Compromise Programming problem. For this task we have introduced the fuzzy ideal solution concept based on soft preference and indifference relationships and on canonical representation of fuzzy numbers by means of their α-cuts. The accuracy between the ideal solution and the objective values is evaluated handling the fuzzy parameters through their expected intervals and using discrepancy between fuzzy numbers in our analysis. A major feature of this model is its sensitivity to the analyst’s opinion as well as to the decision-maker’s preferences. This allows interaction with both when it comes to design the best portfolio.
URI: http://www.sciencedirect.com/science/article/pii/S0096300305003413
ISSN: 0096-3003
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