M. Mashinchi

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In this paper, some methods of similarity measures between objects are presented and their properties are reviewed. The study is conducted to propose a new method based on genetic algorithm in order to reduce the time complexity of finding n most similar objects among the huge number of objects. This method is tested on two applications. The first one aims(More)
In this paper, using a family of confidence intervals, we construct a triangular shaped fuzzy number as the estimator for mean lifetime as well as the estimator for reliability function of a component. We derive the explicit and unique membership functions of these fuzzy estimators. Our attention is on the case where the lifetime has an exponential(More)
Fuzzy linear programming problems can be used to model a wide variety of practical applications in which all or some decision parameters are stated in an imprecise fashion. These problems have been investigated and expanded by many researchers from various points of view. In this paper, we study a class of in nite-dimensional linear programming problems,(More)
This paper is based on a major research project on the development of a novel design of proportional integral derivative (PID) controller for nonlinear systems. The proposed design has superior features, including easy implementation, stable and fast convergence characteristic , and good computational efficiency.