BFRCNet:在快速串行视觉呈现范式中解决阶级失衡问题,用于解码
Meng Xu1, Xinyan Gao1, Fu Li2
1School of Computer Science, Beijing University of Technology, Chaoyang District, pingleyuan No.100, Beijing, 100124, CHINA.
Journal of neural engineering
|December 16, 2025
概括
在快速串行视觉呈现 (RSVP) 任务中失衡的脑电图 (EEG) 数据阻碍了准确性. 一个新的神经网络BFRCNet通过提高不平衡的EEG数据集的分类性能来有效地解决这一问题.
科学领域:
- 神经科学是一个神经科学.
- 机器学习 机器学习
- 生物医学工程 生物医学工程
背景情况:
- 在快速串行视觉呈现 (RSVP) 任务的脑电图 (EEG) 分析中,不平衡的样本大小显著降低了分类准确性.
- 现有的方法很难有效地处理RSVP EEG数据集固有的数据分布差异.
研究的目的:
- 引入BFRCNet,一种专门的神经网络架构,旨在在不平衡数据条件下提高EEG分类准确性.
- 通过开发一种强大的方法来处理EEG信号中的类不平衡来增强RSVP任务的分析.
主要方法:
- BFRCNet采用了三阶段的架构:特征表示,重组和分类.
- 功能表示阶段使用金字塔结构进行多尺度的时空模式集成,灵感来自视觉生理学.
- 再组合阶段使用样本来重新平衡数据分布,分类阶段采用了新的焦点损失函数与类和样本重量.
主要成果:
- 在THU数据集上,BFRCNet获得了89.53%的平衡准确度 (BA) 评分,在CAS数据集上达到90.15%.
- 拟议的方法在解决RSVP任务的阶级不平衡方面显著优于现有的最先进技术.
- 新的焦点损失功能有效地优先考虑少数样本,改善了整体分类性能.
结论:
- 在对RSVP任务分类不平衡的EEG数据方面,BFRCNet表现出卓越的性能.
- 该架构提供了一个强大的解决方案,用于在具有显著类差异的场景中提高分类准确性.
- 这项工作为基于EEG的大脑计算机接口和RSVP范式中的认知状态分析提供了有前途的进展.
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