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Handling uncertainty in medical diagnoses is an open issue. In this paper, we present a new decision-making methodology based on Z-numbers. First, experts’ opinions are represented by Z-numbers. A Z-number is an ordered pair of fuzzy numbers denoted by Z = (A, B). We then propose a new method for ranking fuzzy numbers. Based on this ranking method, we present a novel method for transforming Z-numbers...
Dempster-Shafer evidence theory is an efficient tool used in knowledge reasoning and decision-making under uncertain environments. Conflict management is an open issue in Dempster-Shafer evidence theory. There is no good practice that can be generally accepted until the presence of generalized evidence theory (GET). GET addresses conflict management in an open world, where the frame of discernment...
In the development of E-Commerce, security has always been the core and key issue. To aim at the assessment of E-Commerce security, in order to efficiently handle uncertain information in the process of decision making, a new fuzzy multi-criteria decision-making (MCDM) method is presented based on fuzzy sets theory (FST) and Dempster-Shafer evidence theory (DST). First, a hierarchical structure of...
Dempster Shafer theory of evidence has been widely used in many data fusion application systems. However, how to determine Basic Probability Assignment (BPA), which is the main and the first step in evidence theory, is still an open issue. In the proposed method, species model can be constructed by determination of the min, average and max value to construct a triangular fuzzy number. Then, a method...
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