International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 06 Issue: 11 | Nov 2019 www.irjet.net p-ISSN: 2395-0072
© 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 125
ELECTROENCPHALOGRAM SIGNALS CLASSIFICATION USING GRADIENT
BOOST ALGORITHM AND SUPPORT VECTOR MACHINE
Ajao, T.A
1
, Oyewole, A.O
2
, Ojo, O.S
3
, Amore, T.O
4
, Amusan, D.G
5
and Olabode, A.O
6
1,2,4
Researcher, Federal Institute of Industrial Research Oshodi (FIIRO), Nigeria.
3,6
Research Scholar, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
5
E-Tutor, LAUTECH Open and Distance Learning Center, Ogbomoso, Nigeria.
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Abstract - Automatic diagnosis of epilepsy seizure from Electroencephalogram (EEG) has been an active research in the
field of biomedical science. A significant amount of classification of Electroencephalogram (EEG) signal have been proposed in
recent researches; most of which achieved a very promising performance but are characterized by high false positive rate and
limited by being computationally intensive. This research carried out a comparative analysis of the performance evaluation of
Extreme Gradient Boost Algorithm and Support Vector Machine for the classification of epileptic seizures in human
electroencephalogram (EEG). This research revealed that the XGBoost Algorithm outperformed SVM model in the
classification of an EEG signal.
Keywords- Extreme Gradient Boost, Support Vector Machine, Electroencephalogram (EEG)
1. INTRODUCTION
In recent time, a lot of effort has been directed toward the application of computer analysis of the bio-electric signals of the
human system. Several ill health conditions in man can be detected from the evaluation of the electrical signals with the body,
some of the important bio-electric signals in the human system include those responsible for the heartbeat, brain signal and
those in the central nervous system. However, the breakthrough in soft computing and artificial intelligence has improved the
development of more effective classification, diagnostic techniques and improvements in treatment methodologies (Tzallas, et
al., 2012). Soft computing technique has helped in extracting and classifying bio-signal such as Electromyography (EMG),
electroencephalogram (EEG), Electrooculography (EOG) and electrocardiogram (ECG) in order to detect or treat the ailment.
Different methods and techniques have been developed for detecting and classifying the electroencephalogram (EEG) as either
normal or epileptic. However, complete visual analysis of EEG signal is very difficult, hence, automated means of detection is
essential.
Epilepsy is characterized by sudden recurrent and transient disturbances of perception or behaviour resulting from
excessive synchronization of cortical neuronal networks. Epileptic seizures are divided by their clinical manifestation into
partial or focal, generalized, unilateral and unclassified seizures (Tzallas, Tsipouras, and Fotiadis, 2009). The use of
classification systems in medical diagnosis has increased significantly. There is no doubt that evaluation of data taken from
patients and decisions of experts are the most important factors in diagnosis. Classification systems help to minimize possible
errors that can be done because of a fatigued or inexperienced physician. Automated diagnostic systems have been applied to
a variety of medical data, such as electrocardiograms (ECGs), electromyograms (EMGs), electroencephalograms (EEGs),
ultrasound signals/images, X-rays, and computed tomographic images (AlZubi, Islam and Abbod, (2011). This research
focuses on the comparative analysis of extreme gradient boost and support vector machine in the detection and classification
of an EEG as either epilepsy seizure or non-epilepsy seizure for effective management of a patient suffering from epilepsy
seizure.
Subsequently, the rest of this paper is organized in the following sections: some reviews on related EEG signals, methodology
of a Xboost and SVM, followed by results and discussion. The final section concludes the paper along with some
recommendations for future research.
2. REVIEWS ON ELECTROENCEPHALOGRAM
In recent time, a lot of effort has been directed toward the application of computer analysis of the bio-electric signals of the
human system. Several methods for the brain function analysis such as megnetoencephalography (MEG), functional magnetic