arXiv:2608.09088cs.AIcs.LG2026-08中稿 · IEEE | 2026 9th In…被引 2

通过多尺度动态融合提升脑电情绪识别,尤其擅长捕捉混合情绪。

A Multi-Scale Temporal Framework with Dynamic Fusion for EEG-Based Emotion Recognition

论文配图:A Multi-Scale Temporal Framework with Dynamic Fusion for EEG-Based Emotion Recognition
图 1 · 摘自论文原文
  • 将脑电信号分解为不同时间窗口,用注意力模型处理并动态加权融合。
  • 二分类准确率65.22%,三分类达45.43%,优于单窗口基线。
  • 适合研究复杂情绪状态或需高时间分辨率的脑机交互应用。

混合情绪是临床相关但尚未充分探索的自动情绪识别目标。脑电(EEG)可提供毫秒级神经活动信息,但多数脑电分析流程仅使用单一时间窗口,固定了模型可用的时间结构。本研究提出一种多尺度时间框架用于基于脑电的情绪识别:将脑电信号分解为一个或多个时长的窗口,由共享注意力编码器处理,并通过动态融合模块对不同时间尺度分配样本特定权重。在无主体依赖协议下,分别在二分类与三分类任务中评估,三分类任务包含混合情绪类别。最佳结果为二分类65.22%,三分类45.43%,均来自三尺度动态融合配置,显著高于全信号基线。两类任务的最佳时间尺度不同。动态融合在二分类最优配置中优于拼接,在三分类中略胜,但多尺度设置计算量显著增加。

原文摘要 · Abstract (English)

Mixed emotions represent a clinically relevant but still underexplored target for automatic emotion recognition. EEG provides millisecond-level access to neural activity, yet most EEG pipelines analyze the signal through a single temporal window, thereby fixing the temporal structure available to the model. This study introduces a multi-scale temporal framework for EEG-based emotion recognition. The EEG waveform is decomposed into windows of one or several durations, processed by a shared attention-based encoder, and integrated through a dynamic fusion module that assigns sample-specific weights across temporal scales. The framework is evaluated under a subject-independent protocol in binary and three-class settings, with the three-class task including the mixed affective category. The best results are 65.22% for the two-class task and 45.43% for the three-class task. Both are obtained with three-scale dynamic-fusion configurations and remain substantially above the full-signal baseline. The best-performing temporal scales differ between the two tasks. Dynamic fusion outperforms concatenation in the highest-scoring two-class configuration and slightly exceeds it in the highest-scoring three-class configuration, although these multi-scale settings require substantially more computation than the full-signal baseline.

情绪识别脑电分析多尺度建模动态融合

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