The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we study the method of ranking intuitionistic fuzzy numbers. Firstly a possibility degree formula is defined to compare two intuitionistic fuzzy numbers. We prove the ranking order of two intuitionistic fuzzy numbers obtained by the possibility degree formula is the same as the one by using the score function defined by Chen and Tan. Moreover, the possibility degree formula can provide...
In this paper, by combining the rough sets theory and intuitionistic fuzzy special sets theory, the model of the rough interval-valued intuitionistic fuzzy sets is defined, some basic operations of the model are given, and the properties of the model are discussed. The discussion is the emphasis in the properties of complement. By discussing, co-normality, normality, duality are established in rough...
Considering a user's actual demand, this paper analyzed the functional requirments which can be brought forward by a user of a clustering system and proposed a fuzzy c-means clustering algorithm based on Euclidean distance. In this algorithm, weights are directly appointed by a user or a domanial expert. Different weights show the distinction of the userpsilas recognition of different character criterion...
The purpose of this paper is to present a new approach determining the rough approximations of fuzzy concepts in fuzzy decision systems. Based on the hierarchical characteristic of fuzzy sets, a lambda- weak fuzzy approximation space and a CNlambda -fuzzy rough set, determined by an inclusion function and a near function, are introduced. Some properties of the near function and CNlambda-fuzzy rough...
Using rough sets to reason from data hinges on three basic concepts of rough sets theory: approximations, decision rules and dependencies. Main objective of reasoning from data is finding hidden patterns in data. Genetic algorithms provides a general frame to optimize problem solution of complex system without depending on the domain of problem, it is robust to many kinds of problem. In this paper...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.