@inproceedings{
li2024toward,
title={Toward Robust Incomplete Multimodal Sentiment Analysis via Hierarchical Representation Learning},
author={Mingcheng Li and Dingkang Yang and Yang Liu and Shunli Wang and Jiawei Chen and Shuaibing Wang and Jinjie Wei and Yue Jiang and Qingyao Xu and Xiaolu Hou and Mingyang Sun and Ziyun Qian and Dongliang Kou and Lihua Zhang},
booktitle={The Thirty-eighth Annual Conference on Neural Information Processing Systems},
year={2024},
url={https://openreview.net/forum?id=XgwTH95kCl}
}
Multimodal Sentiment Analysis (MSA) is an important research area that aims to understand and recognize human sentiment through multiple modalities. The complementary information provided by multimodal fusion promotes better sentiment analysis compared to utilizing only a single modality. Nevertheless, in real-world applications, many unavoidable factors may lead to situations of uncertain modality missing, thus hindering the effectiveness of multimodal modeling and degrading the model’s performance. To this end, we propose a Hierarchical Representation Learning Framework (HRLF) for the MSA task under uncertain missing modalities. Specifically, we propose a fine-grained representation factorization module that sufficiently extracts valuable sentiment information by factorizing modality into sentiment-relevant and modality-specific representations through crossmodal translation and sentiment semantic reconstruction. Moreover, a hierarchical mutual information maximization mechanism is introduced to incrementally maximize the mutual information between multi-scale representations to align and reconstruct the high-level semantics in the representations. Ultimately, we propose a hierarchical adversarial learning mechanism that further aligns and adapts the latent distribution of sentiment-relevant representations to produce robust joint multimodal representations. Comprehensive experiments on three datasets demonstrate that HRLF significantly improves MSA performance under uncertain modality missing cases.
Toward Robust Incomplete Multimodal Sentiment Analysis via Hierarchical Representation Learning
Mingcheng Li Dingkang Yang Yang Liu Shunli Wang Jiawei Chen Shuaibing Wang Jinjie Wei Yue Jiang Qingyao Xu Xiaolu Hou Mingyang Sun Ziyun Qian Dongliang Kou Lihua Zhang