In this work, we introduce the concept of fuzzy parameterized interval-valued fuzzy soft set theory (fpivfss) and study their operations. We then define fpivfss-aggregation operator to form fpivfss-decision making method that allows constructing more efficient decision processes. Finally, some numerical examples are employed to substantiate the conceptual… (More)
Molodtsov introduced the concept of soft sets and application of soft sets in decision making and medical diagnosis problems. This was later generalized to soft fuzzy set. In this paper we present the innovative definition of a soft intuitionistic fuzzy set. We also present the definitions of the operations of union, intersection, OR and AND operators of… (More)
In this paper, we present a new modified interval symmetric single-step procedure ISS2-5D which is the extension from the previous procedure ISS2. The algorithm of ISS2-5D includes the introduction of reusable correctors) ,..., 1 () (n i k i = δ for 0 ≥ k. The procedure is tested on five test polynomials and the results are obtained using MATLAB 2007… (More)
The funding of library is optimally utilized to achieve the need of users. We build a goal programming model with utility functions to maximize the number of reading materials bought and the utility for each field's user for bought materials. The model is then applied to a public university library. The goal programming model illustrated an optimum solution… (More)
Molodtsov has introduced the concept of soft sets and the application of soft sets in decision making and medical diagnosis problems. The basic properties of vague soft sets are presented. In this paper, we introduce the concept of interval-valued vague soft sets which are an extension of the soft set and its operations such as equality, subset,… (More)
A new modified interval symmetric single-step procedure ISS1-5D which is the extension from the previous ISS1 is proposed. In procedure ISS1 we define informational efficiency of a method as the higher R-order of convergence evaluation. The procedure is tested on five test polynomials and the results are obtained using MATLAB 2007 software in association… (More)
The concept of generalized interval-valued vague soft set is introduced along with its operations of intersection and union. An application of generalized interval-valued vague soft sets in decision making with respect to degree of preference is illustrated.