Intuitionistic linguistic set is an effective tool to deal with uncertainty. In this paper we develop a new method for financial decision making problems under intuitionistic linguistic environment and introduce the induced intuitionistic linguistic ordered weighted averaging distance (IILOWAD) operator. The main advantage of this operator is that it is able to consider complex attitudinal char...

Currently most of the Web-Based learning systems assess the learner’s knowledge in terms of the learner’s crisp responses to the tests that are taken during the learning process. However, several factors such as successful guesses or choosing a more probable answer lead to uncertainty about the evaluation process. To this end, this paper investigates the use of a novel method based on the Intui...

Building upon the concept of  D operator introduced by Atanassov (1989), this article proposes an improved objective approach and a hybrid approach to operationalize  D so that the hesitation in an intuitionistic fuzzy number (IFN) can be further refined and characterized. Numerical experiments are carried out to demonstrate the features of the proposed approach and its novelty compared to ex...

In the present paper a generalization of the operator Fα,β de ned by Atanassov in [1] is considered. This operator is de ned over the class of p-intuitionistic fuzzy sets. Its properties are studied and a Theorem analogous to the results obtained in [4] is proved.

We develop a new model for fuzzy decision making based on the use of several sources of information in the analysis. We introduce the fuzzy unified aggregation operator (FUAO). It is an aggregation operator that unifies other aggregation operators in the same formulation and considering the degree of importance of each concept in the analysis. Moreover, it also deals with uncertain environments...

Although medical waste usually accounts for a small fraction of urban municipal waste, its proper disposal has been a challenging issue as it often contains infectious, radioactive, or hazardous waste. This article proposes a two-level hierarchical multicriteria decision model to address medical waste disposal method selection (MWDMS), where disposal methods are assessed against different crite...

The Bonferroni mean is an important aggregation technique which can reflect the correlations of the aggregation arguments. The classical Bonferroni mean is an extension of the arithmetic mean, and is generalized by some researchers based on the idea of the geometric mean. In this paper, based on the Bonferroni mean and the harmonic mean, we introduce some new aggregating operators: the fuzzy Bo...

In this paper, we present two Pythagorean fuzzy averaging aggregation operators such as, Pythagorean fuzzy weighted averaging (PFWA) operator, Pythagorean fuzzy ordered weighted averaging (PFOWA) operator and also introduce some of their basic properties.