Forthcoming and Online First Articles

International Journal of Fuzzy Computation and Modelling

International Journal of Fuzzy Computation and Modelling (IJFCM)

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International Journal of Fuzzy Computation and Modelling (3 papers in press)

Regular Issues

  • On the Borel summability method of rough convergence of triple sequences of Bernstein-Stancu operator of fuzzy numbers   Order a copy of this article
    by A. Esi, Subramanian Nagarajan 
    Abstract: The main purpose of this study is to define the concept of rough limit set of a triple sequence space of Bernstein-Stancu polynomials of Borel summability of fuzzy numbers. We obtain the relation between the set of rough limit and the extreme limit points of a triple sequence space of Bernstein-Stancu polynomials of Borel summability method of fuzzy numbers. Finally, we investigate some properties of the rough limit set of Bernstein-Stancu polynomials under which Borel summable sequence of fuzzy numbers are convergent. Also, we give the results for Borel summability method of series of fuzzy numbers.
    Keywords: triple sequences; rough convergence; closed and convex; cluster points and rough limit points; sequences of fuzzy numbers; Bernstein-Stancu polynomials; Borel summability method.
    DOI: 10.1504/IJFCM.2021.10046382
  • Multiobjective Fractional Nonlinear Programming Problems under Pentagonal Intuitionistic Fuzzy environment   Order a copy of this article
    by Deepanjali Sahoo, Arun Tripathy, Jitendra Kumar Pati 
    Abstract: In this paper, a new linear ranking function is introduced to defuzzify the pentagonal intuitionistic fuzzy numbers. Then an intuitionistic fuzzy multiobjective fractional nonlinear programming problem (IFMOFNLPP) is formulated in which, the cost coefficient of objective functions and constraints and the right hand side constants of the constraints are considered as pentagonal intuitionistic fuzzy numbers. Authors have introduced the process of defuzzification and concept of linearisation to convert the suggested problem (IFMOFNLPP) into intuitionistic fuzzy multi objective nonlinear programming problem (IFMONLPP) and then applied the concept of linear ranking to the resultant (IFMONLPP)which yields crisp multiobjective nonlinear programming problem (CMONLPP). Some theorems are established to validate the method. Then by using Zimmermans technique under suitable nonlinear membership functions,(CMONLPP)is reduced to a standard NLPP which can be easily solved by any NLPP algorithm or software. Numerical example is stated to illustrate the present procedure. A comparative study is done for different nonlinear membership functions.
    Keywords: ranking function; intuitionistic fuzzy multiobjective fractional nonlinear programming problems; efficient solution; nonlinear membership function; Zimmerman’s max-min technique.
    DOI: 10.1504/IJFCM.2023.10051886
  • A fuzzy DEA approach for assessing efficiencies of the public sector banks in India   Order a copy of this article
    by Dipali Kumbhar, Hemant Umap 
    Abstract: Banks are one of the most significant economic sectors to the financial growth of each country. Certainly, each banks performance must be evaluated to determine the components that contribute to its profit or loss. This paper is an attempt to evaluate the efficiencies of the public sector banks in India using the data envelopment analysis (DEA) technique. Data from the bank, such as the number of staff, branches, deposits, fluctuates over the year, therefore these figures cannot be stated with 100% accuracy. It varies to some extent from its exact value. In this paper to tackle the impreciseness in the data, the classical DEA model is extended to a fuzzy DEA model by applying fuzzy set theory. Here, input and output data are represented by a trapezoidal membership function and defuzzified by using the function principle approach. In this paper 12 public sector banks in India are assessed for the year 20192020. The crisp and sensitivity analysis results are analysed, and benchmarks are established for output variables. This paper emphasises the economic significance of supporting higher efficiency among public sector banks in India from a strategic standpoint.
    Keywords: DEA; data envelopment analysis; bank performance; fuzzy data; trapezoidal membership function; function principle.
    DOI: 10.1504/IJFCM.2023.10057941