New Approach Based on Fuzzy Hypergraphs in Granular Computing (An Application to the Urban Vulnerability Assessment)

Abstract

Classifying objects based on the simultaneous impact of various parameters has always been challenging due to heterogeneity, impact conflict, and sometimes parameter uncertainty. The purpose of this study is to provide a method for classifying such data. In the proposed method, fuzzy hypergraphs were used to define the granular structures in order to apply the simultaneous effect of heterogeneous and weighted parameters in the classification. This method has been implemented and validated on Fisher intuitive research in relation to the classification of iris flowers. Evaluation and comparison of the proposed method with Fisher’s experimental and results showed higher efficiency and accuracy in flower classification. The proposed method has been used to assess the seismic risk of 50,000 buildings based on 10 heterogeneous parameters. Seismic risk classification showed that more than 88% of buildings were classified, and 12% of buildings that could not be classified due to excessive scatter of parameter values were classified using a very small confidence radius. The results indicate the ability of the proposed method to classify objects with the least similarity and number of effective parameters in classification.

Optimal design and control of permanent magnet assisted dual rotor motor

“…To build an efficient computational model for complex applications with large amounts of data, information, and knowledge (Bargiela and Pedrycz, 2008), the granular function shifts from a machine-centered approach to a humancentered approach. It is one of the trends in granular computing research (Yao, 2010), and fuzzy set theory is an application of granular computing (Zarandi Baghini et al, 2023). The construction of granular functions in fuzzy control is divided into steps such as information sampling, information granulation, and fitting.…”

Determining the membership degree by fuzzy hypergraphs

“…For example, in the field of earthquakes and seismic vulnerability assessment, the impact and role of the distance of buildings from explosive centers (petrol and gas pumps) are not precisely known. In such cases, the structure of fuzzy sets and fuzzy logic have been used to deal with and manage uncertainty [2].…”