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arXiv 2109.07149cs.MMcs.AIcs.LGcs.SD
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多模态情感识别的层次图融合方法

Fusion with Hierarchical Graphs for Mulitmodal Emotion Recognition

UC Berkeley(加州大学伯克利分校);Osaka University(大阪大学);Singapore University of Technology and Design(新加坡科技设计大学)

Shuyun Tang, Zhaojie Luo, Guoshun Nan, Yuichiro Yoshikawa, Ishiguro Hiroshi

摘要:

基于丰富的多模态输入(包括文本、语音和视觉线索)的自动情感识别(AER)在情感智能机器的开发中至关重要。虽然复杂的模态关系已被证明是有效的AER,他们仍然在很大程度上是underexplored,因为以前的作品主要依赖于各种融合机制与简单的连接功能,学习多模态表示的情绪分类。本文提出了一种新的分层融合图卷积网络(HFGCN)模型,该模型通过在特征融合过程中考虑模态依赖性来学习更多信息的多模态表示。具体而言,该模型融合多模态输入使用两阶段图构造方法和编码的模态依赖到会话表示。我们验证了所提出的方法的解释能力,通过投影的情绪状态的2D价唤醒(VA)子空间。大量的实验表明,我们提出的模型更准确的AER,产生了两个公共数据集,IEMOCAP和MELD的最先进的结果的有效性。

英文摘要:

Automatic emotion recognition (AER) based on enriched multimodal inputs, including text, speech, and visual clues, is crucial in the development of emotionally intelligent machines. Although complex modality relationships have been proven effective for AER, they are still largely underexplored because previous works predominantly relied on various fusion mechanisms with simply concatenated features to learn multimodal representations for emotion classification. This paper proposes a novel hierarchical fusion graph convolutional network (HFGCN) model that learns more informative multimodal representations by considering the modality dependencies during the feature fusion procedure. Specifically, the proposed model fuses multimodality inputs using a two-stage graph construction approach and encodes the modality dependencies into the conversation representation. We verified the interpretable capabilities of the proposed method by projecting the emotional states to a 2D valence-arousal (VA) subspace. Extensive experiments showed the effectiveness of our proposed model for more accurate AER, which yielded state-of-the-art results on two public datasets, IEMOCAP and MELD.

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。

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