Abstract：The use of transfer learning algorithms to improve the accuracy of classification recognition is a hot research problem in the application of motion imagination brain-computer interface. Traditional model algorithms for sample transfer and feature transfer do not achieve ideal transfer results when the sample size is small or there is a significant difference between the source domain data and the target domain data. The motion imagery classification algorithm based on Euclidean alignment (EA) and improved jointly class centroid matching and local manifold self-learning (CMMS) migration learning organically combines the advantages of sample migration and feature migration to further improve the classification accuracy while considering the sample itself. Firstly, the samples are subjected to EA in the source and target domains to reduce the differences in data distribution between the source and target domains. Secondly, the CMMS method is improved based on minimizing the maximum mean difference (MMD) to filter the data in the source domain and again reduce the differences in distribution between the samples in the source and target domains. Finally, the method is applied to the BCI competition dataset for offline testing and online experiments. The experimental results show that compared with SVM, JDA, BDA, EasyTL, GFK, and CMMS, the recognition accuracy of the migration learning model is improved by 14.38%, 8.5%, 5.8%, 10.4%, 11.8%, and 5.7%, respectively.
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2023, Vol. 44 
