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arXiv · 2508.06036

More Is Better: A MoE-Based Emotion Recognition Framework with Human Preference Alignment

Jun Xie·Yingjian Zhu·Feng Chen·Zhenghao Zhang·Xiaohui Fan·Hongzhu Yi·Xinming Wang·Chen Yu·Yue Bi·Zhaoran Zhao·Xiongjun Guan·Zhepeng Wang
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Abstract

In this paper, we present our solution for the semi-supervised learning track (MER-SEMI) in MER2025. We propose a comprehensive framework, grounded in the principle that "more is better," to construct a robust Mixture of Experts (MoE) emotion recognition system. Our approach integrates a diverse range of input modalities as independent experts, including novel signals such as knowledge from large Vision-Language Models (VLMs) and temporal Action Unit (AU) information. To effectively utilize unlabeled data, we introduce a consensus-based pseudo-labeling strategy, generating high-quality labels from the agreement between a baseline model and Gemini, which are then used in a two-stage training paradigm. Finally, we employ a multi-expert voting ensemble combined with a rule-based re-ranking process to correct prediction bias and better align the outputs with human preferences. Evaluated on the MER2025-SEMI challenge dataset, our method achieves an F1-score of 0.8772 on the test set, ranking 2nd in the track. Our code is available at https://github.com/zhuyjan/MER2025-MRAC25.

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Jun Xie, Yingjian Zhu, Feng Chen, Zhenghao Zhang, Xiaohui Fan, Hongzhu Yi, Xinming Wang, Chen Yu, Yue Bi, Zhaoran Zhao, Xiongjun Guan, Zhepeng Wang. 2025-08-08. More Is Better: A MoE-Based Emotion Recognition Framework with Human Preference Alignment. https://doi.org/10.1145/3746270.3760215

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