Enhancing Extraversion Classification With Sample Entropy: A Comparison of Two EEG Epoch Lengths

Roslan, Nur Syahirah and Faye, Ibrahima and Amin, Hafeez Ullah and Latif, Muhamad Hafiz Abd (2025) Enhancing Extraversion Classification With Sample Entropy: A Comparison of Two EEG Epoch Lengths. IEEE Sensors Letters, 9 (5). ISSN 24751472

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Abstract

With the advancement of technology, many researchers have begun to employ electroencephalography (EEG) to assess extraversion personality traits, replacing subjective self-report questionnaires. However, most EEG studies are time-consuming and have inadequate classification accuracy. Thus, this letter proposes a framework for extraversion classification using sample entropy features extracted from resting-state EEG signals. The proposed framework compares two different EEG epoch lengths (15 and 120 s) and evaluates their impact on classification performance. To enhance the classification performance, a sequential forward selection method is applied to ensure that only the most optimal features are utilized. Using support vector machine, k-nearest neighbors, random forest, and extreme gradient boosting as classifiers, the study shows that sample entropy outperforms power and coherence features in classifying extraversion. Remarkably, the framework achieves 100 classification accuracy using a single feature: the sample entropy from a 15-s eyes-open condition at the Fpz electrode. By reducing the number of required features to just one and focusing on a shorter EEG epoch length, this finding reflects the potential of developing EEG-based sensor systems that are more practical and cost-effective in the future. © 2017 IEEE.

Item Type: Article
Impact Factor: Cited by: 0
Uncontrolled Keywords: Nearest neighbor search; Classification accuracy; Classification performance; Electroencephalography; Extraversion; Machine-learning; Personality traits; Resting state; Sample entropy; Selection methods; Sequential forward selection; Support vector machines
Depositing User: Mr Ahmad Suhairi Mohamed Lazim
Date Deposited: 08 Jul 2025 16:36
Last Modified: 08 Jul 2025 16:36
URI: http://scholars.utp.edu.my/id/eprint/38914

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