Abstract
This study investigates the effect of changing channel ordering at the input end of EEGNet on the classification performance of deep learning algorithms, based on the entropy weight graph using phase locking value (PLV). The PLV is computed to reflect the phase synchronization relationship between different EEG channels and an adjacency matrix is constructed to obtain an undirected and non-fully connected graph using an appropriate threshold. The clustering coefficient is then calculated for different channels to determine the central node. Subsequently, the distances from the remaining channels to the central node are calculated using the entropy weight graph based on PLV, which serves as the basis for channel ordering. Additionally, the EEGNet is modified according to the characteristics of the EEG data to make it more suitable for the classification of the recorded motor imagery signals. The classification results demonstrate that channel ordering at the input end of the EEGNet can arrange signals with more synchronized phase information together, thereby enhancing the data separability and improving the classification performance effectively.
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Acknowledgments
The work has been financially supported by the Sichuan Science and Technology Program (GrantNos. 2022YFH0073, 2022YFS0021, 2023ZHCG0075 and 2023YFH0037), and 1 · 3 · 5 project for disciplines of excellence, West China Hospital, Sichuan University (Grant Nos. ZYYC21004 and ZYJC21081).
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Ling, P., Xi, K., Chen, P., Yu, X., Li, K. (2023). The Effect of Channel Ordering Based on the Entropy Weight Graph on the MI-EEG Classification. In: Yang, H., et al. Intelligent Robotics and Applications. ICIRA 2023. Lecture Notes in Computer Science(), vol 14272. Springer, Singapore. https://doi.org/10.1007/978-981-99-6480-2_43
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DOI: https://doi.org/10.1007/978-981-99-6480-2_43
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