arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2211.05047eess.AScs.AIcs.SD
收藏

基于深度学习的情感识别数据增强技术比较研究

A Comparative Study of Data Augmentation Techniques for Deep Learning Based Emotion Recognition

Johns Hopkins University(约翰斯·霍普金斯大学)

Ravi Shankar, Abdouh Harouna Kenfack, Arjun Somayazulu, Archana Venkataraman

摘要:

语音中的自动情感识别是一个长期存在的问题。虽然情绪识别的早期工作依赖于手工制作的特征和简单的分类器,但该领域现在已经采用了使用深度神经网络的端到端特征学习和分类。与这些模型并行,研究人员提出了几种数据增强技术,以增加现有标记数据集的大小和可变性。尽管在该领域有许多开创性的贡献,但我们仍然对网络架构和数据增强选择之间的相互作用缺乏了解。此外,只有少数研究证明了特定模型在多个数据集上的可推广性,这是鲁棒的现实世界性能的先决条件。在本文中,我们对流行的情感识别深度学习方法进行了全面评估。为了消除偏差,我们使用VESUS数据集修复模型架构和优化超参数,然后使用重复的5倍交叉验证来评估IEMOCAP和CREMA-D数据集的性能。我们的研究结果表明,语音信号中的长程相关性对于情感识别至关重要,并且速度/速率增强在各个模型中提供了最稳健的性能增益。

英文摘要:

Automated emotion recognition in speech is a long-standing problem. While early work on emotion recognition relied on hand-crafted features and simple classifiers, the field has now embraced end-to-end feature learning and classification using deep neural networks. In parallel to these models, researchers have proposed several data augmentation techniques to increase the size and variability of existing labeled datasets. Despite many seminal contributions in the field, we still have a poor understanding of the interplay between the network architecture and the choice of data augmentation. Moreover, only a handful of studies demonstrate the generalizability of a particular model across multiple datasets, which is a prerequisite for robust real-world performance. In this paper, we conduct a comprehensive evaluation of popular deep learning approaches for emotion recognition. To eliminate bias, we fix the model architectures and optimization hyperparameters using the VESUS dataset and then use repeated 5-fold cross validation to evaluate the performance on the IEMOCAP and CREMA-D datasets. Our results demonstrate that long-range dependencies in the speech signal are critical for emotion recognition and that speed/rate augmentation offers the most robust performance gain across models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑