Hybrid Intuitionistic Fuzzy Set–TOPSIS with a New Similarity Formula: Non-Medical Healing Factors of Covid-19 Patients

Authors

  • Raden Sulaiman Mathematics Department, Faculty of Mathematics and Natural Sciences, State University of Surabaya, Surabaya, East Java, Indonesia
  • Yuliani Puji Astuti Mathematics Department, Faculty of Mathematics and Natural Sciences, State University of Surabaya, Surabaya, East Java, Indonesia
  • Dwi Nur Yunianti Mathematics Department, Faculty of Mathematics and Natural Sciences, State University of Surabaya, Surabaya, East Java, Indonesia
  • N Azzah Awang Faculty of Computer and Mathematical Sciences, UiTM Shah Alam, Shah Alam, Malaysia

DOI:

https://doi.org/10.29020/nybg.ejpam.v19i1.6116

Keywords:

Intuisionistic Fuzzy Sets, Similarity, TOPSIS

Abstract

The formula of similarity measure by Yafie Song et.al. is one of the many formulas that have been developed by the previous authors. Numerically, it is better than other formulas. In this article, we propose a hybrid Intuitionistic Fuzzy Set (IFS)-TOPSIS method by using the similarity measure of Yafie Song. Then, we used the method to determine the most influential non-medical healing factors of Covid-19 patients using that method as case study. The subject of this research is Covid-19 patients in East-Java, Indonesia. Our result shows that “one-house family” is the most influential factor of the non- medical healing for Covid-19 patients. 

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Published

2026-02-16

Issue

Vol. 19 No. 1: (January 2026)

Section

Mathematical and Fuzzy Logic

License

Copyright (c) 2026 Raden Sulaiman, Yuliani Puji Astuti, Dwi Nur Yunianti, N Azzah Awang

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How to Cite

Hybrid Intuitionistic Fuzzy Set–TOPSIS with a New Similarity Formula: Non-Medical Healing Factors of Covid-19 Patients. (2026). European Journal of Pure and Applied Mathematics, 19(1), 6116. https://doi.org/10.29020/nybg.ejpam.v19i1.6116