AAEC: An Adversarial Autoencoder-based Classifier for Audio Emotion Recognition.

In recent years, automatic emotion recognition has attracted the attention of researchers because of its great effects and wide implementations in supporting humans' activities. Given that the data about emotions is difficult to collect and organize into a large database like the dataset of text or images, the true distribution would be difficult to be completely covered by the training set, which affects the model's robustness and generalization in subsequent applications. In this paper, we proposed a model, Adversarial Autoencoder-based Classifier (AAEC), that can not only augment the data within real data distribution but also reasonably extend the boundary of the current data distribution to a possible space. Such an extended space would be better to fit the distribution of training and testing sets. In addition to comparing with baseline models, we modified our proposed model into different configurations and conducted a comprehensive self-comparison with audio modality. The results of our experiment show that our proposed model outperforms the baselines.