Deep Recurrent Semi-Supervised EEG Representation Learning for Emotion Recognition

• URL: http://arxiv.org/abs/2107.13505v1
• Date: Wed, 28 Jul 2021 17:21:30 GMT
• Title: Deep Recurrent Semi-Supervised EEG Representation Learning for Emotion Recognition
• Authors: Guangyi Zhang and Ali Etemad
• Abstract summary: EEG-based emotion recognition often requires sufficient labeled training samples to build an effective computational model. We propose a semi-supervised pipeline to jointly exploit both unlabeled and labeled data for learning EEG representations. We test our framework on the large-scale SEED EEG dataset and compare our results with several other popular semi-supervised methods.
• Score: 14.67085109524245
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: EEG-based emotion recognition often requires sufficient labeled training samples to build an effective computational model. Labeling EEG data, on the other hand, is often expensive and time-consuming. To tackle this problem and reduce the need for output labels in the context of EEG-based emotion recognition, we propose a semi-supervised pipeline to jointly exploit both unlabeled and labeled data for learning EEG representations. Our semi-supervised framework consists of both unsupervised and supervised components. The unsupervised part maximizes the consistency between original and reconstructed input data using an autoencoder, while simultaneously the supervised part minimizes the cross-entropy between the input and output labels. We evaluate our framework using both a stacked autoencoder and an attention-based recurrent autoencoder. We test our framework on the large-scale SEED EEG dataset and compare our results with several other popular semi-supervised methods. Our semi-supervised framework with a deep attention-based recurrent autoencoder consistently outperforms the benchmark methods, even when small sub-sets (3\%, 5\% and 10\%) of the output labels are available during training, achieving a new state-of-the-art semi-supervised performance.

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