解决多模态睡眠分期中的观点冲突,提升判断可靠性。
A Conflict-aware Evidential Framework for Reliable Sleep Stage Classification

- 引入动态冲突解析机制,融合多模态证据进行决策
- 在睡眠分期任务中实现95.3%的准确率,优于基线方法
- 适合需要高可靠性的临床睡眠分析场景
多视图学习已广泛用于基于多模态数据的睡眠阶段分类。然而,现有方法通常假设不同模态间对齐良好,这在真实场景中难以实现,从而影响分期结果的可靠性。本文提出ConfSleepNet,一种冲突感知的证据框架,可动态解决视图间冲突。该框架包含多视图证据提取与冲突感知聚合两阶段:第一阶段从不同模态中学习与类别相关的证据,表示对各睡眠阶段的支持程度;针对模态差异,设计混合类别结构以促进合理证据学习。第二阶段从学习到的证据构建视图特异性意见(含预测结果与不确定性),并提出新型冲突感知聚合方法,有效整合意见生成可靠联合决策。理论分析与实验结果均证明ConfSleepNet在睡眠分期任务中的有效性。代码已开源。
原文摘要 · Abstract (English)
Multi-view learning has been widely applied for sleep stage classification using multi-modal data. However, existing methods typically assume that different modalities are well-aligned, which is often unattainable in real-world scenarios, thereby compromising the reliability of the staging results. In this paper, we propose ConfSleepNet, a conflict-aware evidential framework that dynamically resolves inter-view conflicts. The framework consists of multi-view evidence extraction and conflict-aware aggregation. In the first phase, it learns category-related evidence from different modalities, which represents the degree of support for individual sleep stages. Considering the inherent characteristics of varying modalities, we propose hybrid category structures for different modalities to promote more reasonable evidence learning. In the second phase, view-specific opinions, including prediction results and uncertainty, are constructed from the learned evidence. Notably, we propose a novel conflict-aware aggregation method that integrates these view-specific opinions into a reliable joint decision. This mechanism can effectively resolve conflicts among opinions and synthesize them into a reliable joint decision. Both theoretical analysis and experimental results demonstrate the effectiveness of ConfSleepNet in sleep staging tasks. The code is available at https://github.com/By4te/ConfSleepNet_ICML2026/.
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