Classification of epilepsy seizure phase using interval Type-2 fuzzy support vector machines

Udeme Ekong, H.K. Lam, Bo Xiao, Gaoxiang Ouyang, Hongbin Liu, Kit Yan Chan, Sai Ho Ling

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)
245 Downloads (Pure)

Abstract

An interval type-2 fuzzy support vector machine (IT2FSVM) is proposed to solve a classification problem which aims to classify three epileptic seizure phases (seizure-free, pre-seizure and seizure) from the electroencephalogram (EEG) captured from patients with neurological disorder symptoms. The effectiveness of the IT2FSVM classifier is evaluated based on a set of EEG samples which are collected from 10 patients at Peking university hospital. The EEG samples for the three seizure phases were captured by the 112 2-second 19 channel EEG epochs, where each patient were extracted for each sample. Feature extraction was used to reduce the feature vector of the EEG samples to 45 elements and the EEG samples with the reduced features are used for training the IT2FSVM classifier. The classification results obtained by the IT2FSVM are compared with three traditional classifiers namely Support Vector Machine, k-Nearest Neighbour and naive Bayes. The experimental results show that the IT2FSVM classifier is able to achieve superior learning capabilities with respect to the uncontaminated samples when compared with the three classifiers. In order to validate the level of robustness of the IT2FSVM, the original EEG samples are contaminated with Gaussian white noise at levels of 0.05, 0.1, 0.2 and 0.5. The simulation results show that the IT2FSVM classifier outperforms the traditional classifiers under the original dataset and also shows a high level of robustness when compared to the traditional classifiers with white Gaussian noise applied to it.
Original languageEnglish
Pages (from-to)66-76
Number of pages11
JournalNEUROCOMPUTING
Volume199
Early online date25 Mar 2016
DOIs
Publication statusPublished - 26 Jul 2016

Keywords

  • Classification
  • Epilepsy
  • Fuzzy support vector machine
  • Interval Type-2 fuzzy sets

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