A demonstration of the effects of the number of fuzzy states on a control system
by Maged N. Kamel Boulos
International Journal of Biomedical Engineering and Technology (IJBET), Vol. 39, No. 1, 2022

Abstract: In this paper, we describe a fuzzy logic demonstrator that uses heart rate and skin impedance values as inputs to predict a hypoglycaemia index. The demonstrator was created using JFS v2.00 fuzzy logic freeware and is freely available on the author's website at http://healthcybermap.org/FL/index.htm. We investigate the effects of varying the number of fuzzy states (adjectives or membership functions) in our demonstrator. Iterative experimentation and tuning are always necessary to determine the ideal number and configuration of fuzzy sets for solving a particular clinical problem. The exercise presented in this paper is meant for educational purposes, to provide new students of this important subject with some fundamental insights into the inner working of fuzzy logic systems in their quest to simulate the decision-making process of a human expert.

Online publication date: Tue, 07-Jun-2022

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