A hybrid particle swarm optimization based fuzzy expert system for the diagnosis of coronary artery disease

Authors:
S. Muthukaruppan;M. J. Er
Affiliations:
School of Mechanical and Aerospace Engineering, Nanyang Technological University, N3, 50 Nanyang Avenue, Singapore 639798, Singapore;School of Electrical and Electronic Engineering, Nanyang Technological University, S1, 50 Nanyang Avenue, Singapore 639798, Singapore
Venue:
Expert Systems with Applications: An International Journal
Year:
2012

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Abstract

This paper presents a particle swarm optimization (PSO)-based fuzzy expert system for the diagnosis of coronary artery disease (CAD). The designed system is based on the Cleveland and Hungarian Heart Disease datasets. Since the datasets consist of many input attributes, decision tree (DT) was used to unravel the attributes that contribute towards the diagnosis. The output of the DT was converted into crisp if-then rules and then transformed into fuzzy rule base. PSO was employed to tune the fuzzy membership functions (MFs). Having applied the optimized MFs, the generated fuzzy expert system has yielded 93.27% classification accuracy. The major advantage of this approach is the ability to interpret the decisions made from the created fuzzy expert system, when compared with other approaches.