Optimization of MFCC parameters using Particle Swarm Optimization for diagnosis of infant hypothyroidism using Multi-Layer Perceptron

• Published in: 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10
• Main Author: Zabidi A.; Khuan L.Y.; Mansor W.; Yassin I.M.; Sahak R.
• Format: Conference paper
• Language: English
• Published: 2010
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650816680&doi=10.1109%2fIEMBS.2010.5626712&partnerID=40&md5=b377a1c076ec1417c4a970bc2531373d

This paper presents a new application of the Particle Swarm Optimization (PSO) algorithm to optimize Mel Frequency Cepstrum Coefficients (MFCC) parameters, in order to extract an optimal feature set for diagnosis of hypothyroidism in infants using Multi-Layer Perceptrons (MLP) neural network. MFCC features is influenced by the number of filter banks (fb) and the number of coefficients (nc) used. These parameters are critical in representation of the features as they affect the resolution and dimensionality of the features. In this paper, the PSO algorithm was used to optimize the values of fb and nc. The MFCC features based on the PSO optimization were extracted from healthy and unhealthy infant cry signals and used to train MLP in the classification of hypothyroid infant cries. The results indicate that the PSO algorithm could determine the optimum combination of fb and nc that produce the best classification accuracy of the MLP. © 2010 IEEE.