Treffer: MODELAREA PROBLEMEI DE SELECŢIE A PORTOFOLIILOR CU CONSTRĂANGERI DE LICIDDITATE FUZZY.

This paper proposes a portfolio selection model with fuzzy liquidity constraints, having the minmax semi-absolute deviation function as a measure of risk. We further assume that the share 's rates of circulation are given through the means of grey numbers. In order to be able to estimate the portfolio liquidity level, we first look at the historical values of the shares by representing them using a histogram. Using concepts and results from fuzzy-logic theory, in order to solve the two-objective optimization problem we try to transform our model into an appropriate form so that we can use common available and generally applicable math computation software in order to solve it. [ABSTRACT FROM AUTHOR]