Classification of Five Control/Non-control States to Enhance Asynchronous Brain-Computer Interfaces

Discriminating EEG signals between control and non-control states is a key problem in asynchronous brain-computer interfaces, and recent studies have shown that fusion-based methods can significantly improve the classification accuracy of EEG signals. In this paper, we propose a Dempster-Shafer theo...

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Published in:WRC Symposium on Advanced Robotics and Automation (Online) pp. 51 - 54
Main Authors: Liu, Xueshuo, Zhang, Qian, Li, Jiaxin, Wang, Hantao, Zhao, Jing
Format: Conference Proceeding
Language:English
Published: IEEE 23.08.2024
Subjects:
Accuracy
Brain-computer interfaces
Complex networks
Decision making
Electroencephalography
Feature extraction
Optimization methods
ISSN:2835-3358
Online Access:Get full text
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Abstract Discriminating EEG signals between control and non-control states is a key problem in asynchronous brain-computer interfaces, and recent studies have shown that fusion-based methods can significantly improve the classification accuracy of EEG signals. In this paper, we propose a Dempster-Shafer theory-based decision fusion (DST-DF) method integrating decisions from two asynchronous algorithms for improved classification accuracy. An individualized space-frequency based complex network (ISF-OCN) algorithm and an Irregular-resampling auto-spectral analysis (IRASA) algorithm were used to extract control/non-control features for classification. The DST-DF method constructed the basic probability assignment (BPA) functions for them and assigned weights considering their varied importance in decision making. The weights were optimized using a single objective Bayesian optimization method, and were assigned to the decisions of ISF-OCN and IRASA for D-S fusion. The experimental results of 10 subjects showed that the proposed method obtained higher accuracy (93.92%) by integrating the ISF-OCN (78.87%) and IRASA (91.20%) algorithms.
AbstractList Discriminating EEG signals between control and non-control states is a key problem in asynchronous brain-computer interfaces, and recent studies have shown that fusion-based methods can significantly improve the classification accuracy of EEG signals. In this paper, we propose a Dempster-Shafer theory-based decision fusion (DST-DF) method integrating decisions from two asynchronous algorithms for improved classification accuracy. An individualized space-frequency based complex network (ISF-OCN) algorithm and an Irregular-resampling auto-spectral analysis (IRASA) algorithm were used to extract control/non-control features for classification. The DST-DF method constructed the basic probability assignment (BPA) functions for them and assigned weights considering their varied importance in decision making. The weights were optimized using a single objective Bayesian optimization method, and were assigned to the decisions of ISF-OCN and IRASA for D-S fusion. The experimental results of 10 subjects showed that the proposed method obtained higher accuracy (93.92%) by integrating the ISF-OCN (78.87%) and IRASA (91.20%) algorithms.
Author Zhang, Qian
Li, Jiaxin
Wang, Hantao
Zhao, Jing
Liu, Xueshuo
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  organization: Yanshan University,Department of Electrical Engineering,Qinhuangdao,China,066004
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Snippet Discriminating EEG signals between control and non-control states is a key problem in asynchronous brain-computer interfaces, and recent studies have shown...
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StartPage 51
SubjectTerms Accuracy
Brain-computer interfaces
Complex networks
Decision making
Electroencephalography
Feature extraction
Optimization methods
Title Classification of Five Control/Non-control States to Enhance Asynchronous Brain-Computer Interfaces
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