A fuzzy if-then rule whose consequent part is a real number is referred to as a simplified fuzzy rule. Simplified fuzzy if-then rules have been widely used in function approximation problems due to no complicated defuzzification is required. The proposed simplified fuzzy rule-based...

This paper examines the role of the interest rate in investment decisions for firms in Taiwan. To reflect the human side of decision making and the uncertain nature of information provided, we employ fuzzy set theory and fuzzy logic to examine the nonlinear relationship between these two...

Accessing a hospital through the Emergency Department (ED) has become a subject of study for many researchers involved in pricing and resource allocation in healthcare. The research developed in this paper aims to measure the performance of the ED at Sfax Hospital as perceived by its patients....

In a bilevel decision problem, both the leader and the follower may have multiple objectives, and the coefficients involved in these objective functions or constraints may be described by some uncertain values. To express such a situation, a fuzzy multi-objective bilevel (FMOBL) programming...

In this paper we deal with the problem of the knowledge under uncertain conditions. Since Plato definition in Teetetos, knowledge has been defined as a true belief and this has been thougt as a clear and distinct idea. So, if we have any kind of knowledge, it can´t be uncertain. We are trying...

This paper sets up a one period model for pricing an option with a fuzzy payoff. The option is written on an underlying asset that has a fuzzy price at the end of the period, modelled by means of triangular fuzzy numbers. The pricing methodology used is the standard one for pricing derivatives,...

Bilevel programming techniques are developed for decentralized decision problems with decision makers located in two levels. Both upper and lower decision makers, termed as leader and follower, try to optimize their own objectives in solution procedure but are affected by those of the other...