Approximate Fuzzy Inverse Matrix Calculation Method using Scenario-based Inverses and Bisection

Year 2023, , 42 - 50, 29.03.2023

Hande Günay Akdemir

https://doi.org/10.33401/fujma.1195121

Cited By: 1

Abstract

In this paper, we introduce a numerical method to construct the inverse of a square matrix whose elements are trapezoidal or triangular fuzzy numbers (FNs). A set of fuzzy linear equations is required to be solved in order to determine the fuzzy inverse matrix. The proposed technique first iteratively searches the possible solution intervals and then narrows those too-wide estimated intervals via bisection. Using interval arithmetic in left and right matrix multiplication, we aim to approximate the identity matrix as a result of product operations. The dissimilarity of the endpoints of intervals belonging to multiplication matrices with the identity matrix is considered to be an error function to be minimized. In this way, even if the entries of a matrix are uncertain, the fuzzy inverse matrix containing all inverse matrices can be found quickly with the use of computer technology. The method is explained, and comparisons are drawn with inverse stable examples from the literature.

Keywords

Approximate fuzzy inverse, Bisection method, Fully fuzzy linear system of equations, Fuzzy matrix, Fuzzy numerical simulation

Project Number

Yok

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