Comparative Study of Pentagonal and Hexagonal Fuzzy Membership Function Using Credibility Theory in Machine Learning Systems
Article Information
Abstract
The paper carries out a comparative study that is based on the use of credibility theory to examine pentagonal and hexagonal fuzzy membership functions of machine learning systems. These fuzzy memberships can be used to manage the uncertainty and imprecision of a data driven-model which allows better decision-making in the case of vague or incomplete information. The credibility theory is used to determine quantitatively the reliability of the inferences obtained through each function. Both the membership functions are modelled, incorporated in machine learning framework and tested on randomly generated as well as application specific datasets. The results obtained indicate that Cases 1 through 3 yield identical credibility values for both functions, while the additional Case 4 introduced by the hexagonal model produces a lower credibility value, resulting in a higher overall average credibility for the pentagonal function (0.552 vs. 0.535). The results provide excellent recommendations in implementing fuzzy logic that can be applied to engineering, finance, and decision-support systems. Future directions could include more complicated shapes of the functions used, larger data sets and the ability of the results to be scaled up in the real world.
Graphical Abstract
Keywords
Data Availability Statement
Funding
Conflicts of Interest
Ethical Approval and Consent to Participate
References
- Zadeh, L. A. (1965). Fuzzy sets. Information and control, 8(3), 338-353.
[CrossRef] [Google Scholar] - Pathinathan, T., & Ponnivalavan, K. (2014). Pentagonal fuzzy number. International journal of computing algorithm, 3(2014), 1003-1005. https://www.academia.edu/7764315/Pentagonal_Fuzzy_Number
[Google Scholar] - Mondal, S. P., & Mandal, M. (2017). Pentagonal fuzzy number, its properties and application in fuzzy equation. Future Computing and Informatics Journal, 2(2), 110-117.
[CrossRef] [Google Scholar] - Chakraborty, A., Mondal, S. P., Alam, S., Ahmadian, A., Senu, N., De, D., & Salahshour, S. (2019). The pentagonal fuzzy number: its different representations, properties, ranking, defuzzification and application in game problems. Symmetry, 11(2), 248.
[CrossRef] [Google Scholar] - Rajeshwari, P., Sudha, A. S., & Karthika, R. (2013). A new operation on hexagonal fuzzy numbers. International Journal of Fuzzy Logic System, 3(3), 15-26.
[CrossRef] [Google Scholar] - Chakraborty, A., Maity, S., Jain, S., Mondal, S. P., & Alam, S. (2021). Hexagonal fuzzy number and its distinctive representation, ranking, defuzzification technique and application in production inventory management problem. Granular Computing, 6(3), 507-521.
[CrossRef] [Google Scholar] - Dubois, D. J. (1980). Fuzzy sets and systems: theory and applications (Vol. 144). Academic press. https://hal.science/hal-04205865/
[Google Scholar] - Liu, B., & Liu, Y. K. (2002). Expected value of fuzzy variable and fuzzy expected value models. IEEE transactions on Fuzzy Systems, 10(4), 445-450.
[CrossRef] [Google Scholar] - Garg, H. (2016). A novel approach for analyzing the reliability of series-parallel system using credibility theory and different types of intuitionistic fuzzy numbers. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 38(3), 1021-1035.
[CrossRef] [Google Scholar] - Lu, J., Ma, G., & Zhang, G. (2024). Fuzzy machine learning: A comprehensive framework and systematic review. IEEE Transactions on Fuzzy Systems, 32(7), 3861-3878.
[CrossRef] [Google Scholar] - Liu, B. (2004). Uncertainty theory: an introduction to its axiomatic foundation. Physica-Verlag, Heidelberg.
[CrossRef] [Google Scholar] - Hesamian, G., & Bahrami, F. (2016). Credibility theory-oriented preference index for ranking fuzzy numbers. Iranian Journal of Fuzzy Systems, 14(6), 103-117.
[CrossRef] [Google Scholar] - Koppula, K., Kedukodi, B. S., & Kuncham, S. P. (2022). Generalization and ranking of fuzzy numbers by relative preference relation. Soft Computing, 26(3), 1101-1122.
[CrossRef] [Google Scholar] - Pathinathan, T., & Ponnivalavan, K. (2015). Reverse order triangular, trapezoidal and pentagonal fuzzy numbers. Annals of Pure and Applied Mathematics, 9(1), 107-117. http://www.researchmathsci.org/apamart/APAM-v9n1-12.pdf
[Google Scholar] - Li, X., & Liu, B. (2006). A sufficient and necessary condition for credibility measures. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 14(05), 527-535.
[CrossRef] [Google Scholar]
Cited By (5)
-
Gaurav Dhiman, Kiran Deep Singh, Prabh Deep Singh, Norah Saleh Alghamdi, Ghadah Shukri Albakri. A novel approach to reliable and flexible distributed computing with virtualization in smart healthcare applications.
Scientific Reports, 2026 , 16 (1).
[CrossRef] -
İlknur Dönmez, Faruk Bulut. Multidimensional diversity in video recommender systems: a holistic framework of literature gaps and future directions.
Intelligent Systems with Applications, 2026 , 31 .
[CrossRef] -
Shubhani Aggarwal, Arzoo Miglani, Norah Saleh Alghamdi, Gaurav Dhiman. Resilient and decentralized demand-side management in smart grids using blockchain.
Scientific Reports, 2026 , 16 (1).
[CrossRef] -
Jinhao Du, Yarong Chen, Jabir Mumtaz, Faisal Alkaabneh, Ziyang Ji, Kaynat Afzal Minhas. Multi-agent deep reinforcement learning for dynamic lot-streaming flow shop problems with unequal sub-lots and capacity constraints.
Journal of Industrial Information Integration, 2026 , 51 .
[CrossRef] -
Meenakshi Garg, Nor Asilah Wati Abdul Hamid, Dafik, Sunder R.. AI-driven feature descriptor design using CNNs and transfer learning for enhanced image retrieval accuracy and efficiency.
Scientific Reports, 2026 , 16 (1).
[CrossRef]
Cite This Article
TY - JOUR AU - Bmotra, Mansi AU - Kumar, Rakesh AU - Dhiman, Gaurav PY - 2025 DA - 2025/11/08 TI - Comparative Study of Pentagonal and Hexagonal Fuzzy Membership Function Using Credibility Theory in Machine Learning Systems JO - ICCK Transactions on Machine Intelligence T2 - ICCK Transactions on Machine Intelligence JF - ICCK Transactions on Machine Intelligence VL - 1 IS - 3 SP - 127 EP - 137 DO - 10.62762/TMI.2025.922612 UR - https://www.icck.org/article/abs/TMI.2025.922612 KW - fuzzy sets KW - credibility theory KW - membership functions KW - machine learning system AB - The paper carries out a comparative study that is based on the use of credibility theory to examine pentagonal and hexagonal fuzzy membership functions of machine learning systems. These fuzzy memberships can be used to manage the uncertainty and imprecision of a data driven-model which allows better decision-making in the case of vague or incomplete information. The credibility theory is used to determine quantitatively the reliability of the inferences obtained through each function. Both the membership functions are modelled, incorporated in machine learning framework and tested on randomly generated as well as application specific datasets. The results obtained indicate that Cases 1 through 3 yield identical credibility values for both functions, while the additional Case 4 introduced by the hexagonal model produces a lower credibility value, resulting in a higher overall average credibility for the pentagonal function (0.552 vs. 0.535). The results provide excellent recommendations in implementing fuzzy logic that can be applied to engineering, finance, and decision-support systems. Future directions could include more complicated shapes of the functions used, larger data sets and the ability of the results to be scaled up in the real world. SN - 3068-7403 PB - Institute of Central Computation and Knowledge LA - English ER -
@article{Bmotra2025Comparativ,
author = {Mansi Bmotra and Rakesh Kumar and Gaurav Dhiman},
title = {Comparative Study of Pentagonal and Hexagonal Fuzzy Membership Function Using Credibility Theory in Machine Learning Systems},
journal = {ICCK Transactions on Machine Intelligence},
year = {2025},
volume = {1},
number = {3},
pages = {127-137},
doi = {10.62762/TMI.2025.922612},
url = {https://www.icck.org/article/abs/TMI.2025.922612},
abstract = {The paper carries out a comparative study that is based on the use of credibility theory to examine pentagonal and hexagonal fuzzy membership functions of machine learning systems. These fuzzy memberships can be used to manage the uncertainty and imprecision of a data driven-model which allows better decision-making in the case of vague or incomplete information. The credibility theory is used to determine quantitatively the reliability of the inferences obtained through each function. Both the membership functions are modelled, incorporated in machine learning framework and tested on randomly generated as well as application specific datasets. The results obtained indicate that Cases 1 through 3 yield identical credibility values for both functions, while the additional Case 4 introduced by the hexagonal model produces a lower credibility value, resulting in a higher overall average credibility for the pentagonal function (0.552 vs. 0.535). The results provide excellent recommendations in implementing fuzzy logic that can be applied to engineering, finance, and decision-support systems. Future directions could include more complicated shapes of the functions used, larger data sets and the ability of the results to be scaled up in the real world.},
keywords = {fuzzy sets, credibility theory, membership functions, machine learning system},
issn = {3068-7403},
publisher = {Institute of Central Computation and Knowledge}
}
Publisher's Note
ICCK stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and Permissions
Portico