Dual-branch Graph Domain Adaptation for Cross-scenario Multi-modal Emotion Recognition
This work addresses the limited generalization of multimodal conversational emotion recognition across diverse scenarios, where variations in speakers, topics, styles, and noise degrade performance. To tackle this challenge, the authors propose a dual-branch graph-based domain adaptation framework that jointly models domain adaptation and robustness to label noise for the first time. The method constructs an emotion interaction hypergraph and employs a dual-branch encoder to capture both local multi-way relationships and global dependencies. A domain adversarial discriminator is integrated to learn domain-invariant representations, while a regularization loss mitigates the adverse effects of label noise. Theoretical analysis yields a tighter generalization bound. Extensive experiments on IEMOCAP and MELD demonstrate that the proposed model significantly outperforms strong baselines, achieving superior cross-scenario emotion recognition and generalization capabilities.