Sustainability assessment of nations and related decision making using fuzzy logic

Kouloumpis, Viktor, Kouikoglou, V.S. and Phillis, Y.A. (2008) Sustainability assessment of nations and related decision making using fuzzy logic. IEEE Systems Journal, 2 (2). pp. 224-236. Full text not available from this repository.

(Contact the author)
Official URL:


This paper refines and extends in fundamental ways an existing model for the numerical assessment of sustainability called sustainability assessment by fuzzy evaluation (SAFE). SAFE, in its basic form, uses fuzzy logic to combine a large suite of basic indicators and then computes numerical values of sustainability for a number of composite indicators such as air, land, economy, health, etc. At a higher hierarchy it computes the sustainability of an ecological and a human component, and finally, it computes overall sustainability of a country or region. As state-of-the-art in fuzzy analysis has advanced, we are prompted to modify SAFE accordingly. The refined model uses the so-called Takagi-Sugeno-Kang inference scheme (TSK) which together with a few technical requirements guarantees monotonicity, i.e., an improvement of a basic indicator leads to an improvement of sustainability. Another refinement concerns the data inputs. To include the effects of past environmental pressures and development policies on the present state of sustainability, we use exponential smoothing to take account of the past with exponentially decaying weights. Finally, the model is now applied to all countries of the world for which data could be obtained and their corresponding sustainabilities are computed. Also, through sensitivity analysis, the most important indicators that affect sustainability are identified.

Item Type: Article
Journal or Publication Title: IEEE Systems Journal
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
ISSN: 1932-8184
Departments: Science, Natural Resources and Outdoor Studies
Pre 2016 Departments: National School of Forestry
Depositing User: Anna Lupton
Date Deposited: 28 Jan 2016 11:19
Last Modified: 26 Aug 2016 16:10

Actions (repository staff only)

Edit Item Edit Item