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- W3207016005 abstract "The acquisition of a large-volume brainwave database is challenging because of the stressful experiments that are required; however, data synthesis techniques can be used to address this limitation. Covariance matrix decomposition (CMD), a widely used data synthesis approach, generates artificial data using the correlation between features and random noise. However, previous CMD methods constrain the stochastic characteristics of artificial datasets because the random noise used follows a standard distribution. Therefore, this study has improved the performance of CMD by releasing such constraints. Specifically, a generalized normal distribution (GND) was used as it can alter the kurtosis and skewness of the random noise, affecting the distribution of the artificial data. For the validation of GND performance, a motor imagery brainwave classification was conducted on the artificial dataset generated by GND. The GND-based data synthesis increased the classification accuracy obtained with the original data by approximately 8%." @default.
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- W3207016005 date "2021-10-09" @default.
- W3207016005 modified "2023-09-25" @default.
- W3207016005 title "Flexible Covariance Matrix Decomposition Method for Data Augmentation and Its Application to Brainwave Signals" @default.
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- W3207016005 doi "https://doi.org/10.3390/app11209388" @default.
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