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Lazim Abdullah

Authors and WSEAS

Lazim Abdullah

WSEAS Transactions on Environment and Development

Print ISSN: 1790-5079
E-ISSN: 2224-3496

Volume 13, 2017

Notice: As of 2014 and for the forthcoming years, the publication frequency/periodicity of WSEAS Journals is adapted to the 'continuously updated' model. What this means is that instead of being separated into issues, new papers will be added on a continuous basis, allowing a more regular flow and shorter publication times. The papers will appear in reverse order, therefore the most recent one will be on top.

Volume 13, 2017

A Fuzzy Decision Making Method in Developing Environmental Performance Index

AUTHORS: Lazim Abdullah

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ABSTRACT: Environmental Performance Index (EPI) is used to rank the performance in environment protection for most of the countries in the world. EPI is a score which gives a gauge at a national government scale using the method of proximity-to-target value. The current method fails to consider incomplete and vague environment data in its computations. This paper proposes a new score of EPI using a decision making method of interval-valued intuitionistic fuzzy TOPSIS. Differently from the typical arithmetic operations of the proximity-to-target value, which directly used subtraction and division, this method introduces the concept of distance to ideal solution based on the decision makers’ assessments. A case of eleven countries in Southeast Asia region was considered to illustrate the computations. Three decision makers were invited to rate the extent of a country performs against the specific environmental criteria using the defined linguistic variables. An interval-valued intuitionistic fuzzy decision matrix was constructed based on dual degree of membership elicited from decision makers’ assessment. The closeness coefficient that represents a score for each country was finally established after executing the five-step computation. With the closeness coefficient of 0.8028, Malaysia was the best EPI among the selected countries. The method successfully offers a new score of EPI and subsequently managed to identify the countries’ environmental performance.

KEYWORDS: Environmental assessment, intuitionistic fuzzy sets, environmental criteria, decision making, linguistic assessment


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WSEAS Transactions on Environment and Development, ISSN / E-ISSN: 1790-5079 / 2224-3496, Volume 13, 2017, Art. #36, pp. 350-359

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