An Improved Linguistic Haar Fuzzy Decision Maps

Fuzzy Decision Map (FDM) was introduced as an extension of DEMATEL in 2006. It integrates the salient features of eigenvalue method, fuzzy cognitive maps, and weighting equation. Usually, researchers facilitated triangular and trapezoidal fuzzy numbers to describe weights of causal relation between factors. But it is not always plausible to use triangular and trapezoidal number. Therefore, the objective of this research is to enhance Fuzzy Decision Map by using the linguistic terms to define causality among the factors. And, heptagonal fuzzy numbers are employed to represent the linguistic terms. Furthermore, the Haar ranking method has been proposed to reduce uncertainties. The proposed Improved Linguistic Haar Fuzzy Decision Maps (ILHFDM) has been applied to analyze the environmental benefits of organic farming. After applying the proposed model, it is identified that ecological services ranked as the most influencing factor among the rest of the factors in enhancing the environment by practicing organic farming.