The adoption of investment solutions uncertainty factors provide project risk, i.e. the risk of loss of resources, incomplete acquisition of the required income and occurrence unexpected expenses. The presence of different types uncertainty brings us to the need to adapt the indicators of...

This article integrates fuzzy set theory in Data Envelopment Analysis (DEA) framework to compute technical efficiency scores when input and output data are imprecise. The underlying assumption in convectional DEA is that inputs and outputs data are measured with precision. However, production...

In this paper, we show a procedure for solving multilevel fractional programming problems in a large hierarchical decentralized organization using fuzzy goal programming approach. In the proposed method, the tolerance membership functions for the fuzzily described numerator and denominator part...