scholarly journals Fuzzy multiple criteria decision making approach in environmental risk assessment

2015 ◽  
Vol 3 ◽  
pp. 164
Author(s):  
Andrejs Radionovs ◽  
Oleg Uzhga-Rebrov
Keyword(s):  
Risk Assessment ◽  
Decision Making ◽  
Ecological Risk ◽  
Statistical Data ◽  
Multiple Criteria Decision Making ◽  
Analysis Data ◽  
Multiple Criteria ◽  
Source Information ◽  
Chemical Factory ◽  
Relevant Factors

<p class="R-AbstractKeywords"><span lang="EN-US">Being able to evaluate risks is an important task in many areas of human activity: economics, ecology, etc. In case of a sufficient amount of source information the risk is evaluated using statistical methods. However, in reality the sufficiency of statistical data in risk assessment is more exceptional than normal. In such cases experts’ assessment make the only source of data. Experts are able to provide the necessary for analysis data due to their professional knowledge and experience. Certain amount of factors, which is to be evaluated by an expert (experts), significantly affects the process of experts’ assessment. If a big number of relevant factors occur, an expert may face a problem of defining links between “factors” and “outcome”. Fuzzy multiple criteria decision making approach can be used to solve the problem. Ecological risk assessment towards human health in case of gaseous substances escape at a chemical factory using hierarchical method and fuzzy multiple criteria decision making approach has been analyzed in the article.</span></p>

scholarly journals Default Risk Assessment of Tunisian Smes: Multiple Criteria Decision Making Approaches

2016 ◽  
Vol 1 (2) ◽  
pp. 29
Author(s):  
Salah BEN HAMAD ◽  
Nesrine TURKI
Keyword(s):  
Risk Assessment ◽  
Decision Making ◽  
Default Risk ◽  
Financial Support ◽  
Multiple Criteria Decision Making ◽  
Multiple Criteria ◽  
Support Structures ◽  
Main Obstacle ◽  
The Many ◽  
Multicriteria Methodology

<p>The default risk is a reality as well for the companies as for the economy of a country. This paper has highlighted the fact that in spite of the many incentives to promote Tunisian SMEs, creation of these companies remains below expectations. Thus, a study assessing the risk of failure is imperative. A multicriteria methodology of decision-making in a sample of 41 small and medium-sized enterprises used financing by the Tunisian Solidarity Bank (BTS) as one of the financial support structures relative to investment credits. The results showed that the application of a policy of caution (pessimistic procedure) in the granting of loans by the BTS is the main obstacle to the creation, development and sustainability of the Tunisian SMEs.</p>

scholarly journals A New Grey Approach for Using SWARA and PIPRECIA Methods in a Group Decision-Making Environment

Mathematics ◽  
2021 ◽  
Vol 9 (13) ◽  
pp. 1554
Author(s):  
Dragiša Stanujkić ◽  
Darjan Karabašević ◽  
Gabrijela Popović ◽  
Predrag S. Stanimirović ◽  
Muzafer Saračević ◽  
...  
Keyword(s):  
Decision Making ◽  
Group Decision Making ◽  
Group Decision ◽  
Multiple Criteria Decision Making ◽  
Grey System Theory ◽  
Multiple Criteria ◽  
Decision Making Process ◽  
Grey System ◽  
Criteria Weights

The environment in which the decision-making process takes place is often characterized by uncertainty and vagueness and, because of that, sometimes it is very hard to express the criteria weights with crisp numbers. Therefore, the application of the Grey System Theory, i.e., grey numbers, in this case, is very convenient when it comes to determination of the criteria weights with partially known information. Besides, the criteria weights have a significant role in the multiple criteria decision-making process. Many ordinary multiple criteria decision-making methods are adapted for using grey numbers, and this is the case in this article as well. A new grey extension of the certain multiple criteria decision-making methods for the determination of the criteria weights is proposed. Therefore, the article aims to propose a new extension of the Step-wise Weight Assessment Ratio Analysis (SWARA) and PIvot Pairwise Relative Criteria Importance Assessment (PIPRECIA) methods adapted for group decision-making. In the proposed approach, attitudes of decision-makers are transformed into grey group attitudes, which allows taking advantage of the benefit that grey numbers provide over crisp numbers. The main advantage of the proposed approach in relation to the use of crisp numbers is the ability to conduct different analyses, i.e., considering different scenarios, such as pessimistic, optimistic, and so on. By varying the value of the whitening coefficient, different weights of the criteria can be obtained, and it should be emphasized that this approach gives the same weights as in the case of crisp numbers when the whitening coefficient has a value of 0.5. In addition, in this approach, the grey number was formed based on the median value of collected responses because it better maintains the deviation from the normal distribution of the collected responses. The application of the proposed approach was considered through two numerical illustrations, based on which appropriate conclusions were drawn.

Sign in / Sign up

Export Citation Format

Share Document