Rethinking Multimodal Sentiment Analysis: A High-Accuracy, Simplified Fusion Architecture

• URL: http://arxiv.org/abs/2505.04642v1
• Date: Mon, 05 May 2025 02:31:11 GMT
• Title: Rethinking Multimodal Sentiment Analysis: A High-Accuracy, Simplified Fusion Architecture
• Authors: Nischal Mandal, Yang Li,
• Abstract summary: We propose a lightweight, yet effective fusion-based deep learning model tailored for utterance-level emotion classification.<n>Our approach demonstrates that with careful feature engineering and modular design, simpler fusion strategies can outperform or match more complex models.
• Score: 2.3272964989267626
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Multimodal sentiment analysis, a pivotal task in affective computing, seeks to understand human emotions by integrating cues from language, audio, and visual signals. While many recent approaches leverage complex attention mechanisms and hierarchical architectures, we propose a lightweight, yet effective fusion-based deep learning model tailored for utterance-level emotion classification. Using the benchmark IEMOCAP dataset, which includes aligned text, audio-derived numeric features, and visual descriptors, we design a modality-specific encoder using fully connected layers followed by dropout regularization. The modality-specific representations are then fused using simple concatenation and passed through a dense fusion layer to capture cross-modal interactions. This streamlined architecture avoids computational overhead while preserving performance, achieving a classification accuracy of 92% across six emotion categories. Our approach demonstrates that with careful feature engineering and modular design, simpler fusion strategies can outperform or match more complex models, particularly in resource-constrained environments.

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