The Defuzzification Methods Comparison of Mamdani Fuzzy Inference System in Predicting Tofu Production

  • Grandianus Seda Mada Program Studi Matematika, Fakultas Pertanian, Universitas Timor
  • Nugraha Kristiano Floresda Dethan Program Studi Matematika, Fakultas Pertanian, Universitas Timor
  • Andika Ellena Saufika Hakim Maharani Universitas Bumigora
Keywords: Fuzzy Inference System, Defuzzification, Mamdani, Tofu

Abstract

One of the tofu-producing companies in Kupang City is Bintang Oesapa. With the Covid-19 pandemic,
the factory needs to reconsider the amount of production by taking into account the unpredictability of
demand and resources to minimize losses due to excessive accumulation or shortages of supplies. In
determining the amount of production, Mamdani’s Fuzzy Inference System (FIS) can be used, which
is a method for the analysis of an uncertain system. This method has three stages in the process of
decision making, namely fuzzification, inferencing and defuzzification. In the defuzzification stage,
the FIS Mamdani has five methods, namely Centroid, Bisector, Mean of Maximum (MOM), Smallest
of Maximum (SOM), and Largest of Maximum (LOM). This study discusses an application of FIS
Mamdani with five defuzzification methods for determining daily tofu production. The purpose of this
study is to offer a solution by first comparing the five defuzzification methods in assessing the amount of
tofu production at the Bintang Oesapa factory and then determining that which is most appropriate. The
input variables used in this research are the amount of demand and the amount of available stock, while
the amount of production is our variable of interest. The results showed that the best defuzzification
method was the MOM method with an accuracy level of 94.73% and a small error value, 5.27%. The
MOM defuzzification is expected to aid decision makers in determining the best amount of production
during the pandemic.

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Published
2022-04-26
How to Cite
[1]
G. Mada, N. Dethan, and A. Maharani, “The Defuzzification Methods Comparison of Mamdani Fuzzy Inference System in Predicting Tofu Production”, Jurnal Varian, vol. 5, no. 2, pp. 137- 148, Apr. 2022.
Section
Articles