Exploring Self-Supervised Multi-view Contrastive Learning for Speech Emotion Recognition with Limited Annotations
This addresses the costly challenge of obtaining labeled data for SER, offering a method to enhance performance with limited annotations, though it is incremental as it builds on existing SSL approaches.
The paper tackles the problem of limited labeled data for Speech Emotion Recognition (SER) by proposing a multi-view self-supervised learning pre-training technique, resulting in up to a 10% improvement in Unweighted Average Recall in sparse annotation settings.
Recent advancements in Deep and Self-Supervised Learning (SSL) have led to substantial improvements in Speech Emotion Recognition (SER) performance, reaching unprecedented levels. However, obtaining sufficient amounts of accurately labeled data for training or fine-tuning the models remains a costly and challenging task. In this paper, we propose a multi-view SSL pre-training technique that can be applied to various representations of speech, including the ones generated by large speech models, to improve SER performance in scenarios where annotations are limited. Our experiments, based on wav2vec 2.0, spectral and paralinguistic features, demonstrate that the proposed framework boosts the SER performance, by up to 10% in Unweighted Average Recall, in settings with extremely sparse data annotations.