提出新模型解决多视图数据缺失时的不确定性估计难题。
Towards Robust Uncertainty-Aware Incomplete Multi-View Classification
- 先粗略补全数据,再映射到隐空间逐步学习证据分布。
- 在高不确定性和冲突证据场景下,性能显著优于传统方法。
- 适合处理带噪声和缺失数据的多视图分类任务。
多视图分类中的不完整数据处理具有挑战性,尤其当传统填补方法引入偏差,影响不确定性估计时。现有基于证据深度学习(EDL)的方法常因德贝尔-沙弗组合规则的局限,难以应对冲突证据,导致决策不可靠。为此,我们提出交替渐进学习网络(APLN),专为提升不完整多视图分类中EDL方法的表现而设计。该方法通过先进行粗略填补,再将数据映射至隐空间,逐步学习与目标域对齐的证据分布,并结合EDL考虑不确定性。同时,引入冲突感知的德贝尔-沙弗组合规则(DSCR),更好处理冲突证据。通过从学习到的分布中采样,优化缺失视图的隐表示,降低偏差并增强决策鲁棒性。大量实验表明,结合DSCR的APLN在高不确定性与冲突证据环境下显著优于传统方法,成为不完整多视图分类的有力解决方案。
原文摘要 · Abstract (English)
Handling incomplete data in multi-view classification is challenging, especially when traditional imputation methods introduce biases that compromise uncertainty estimation. Existing Evidential Deep Learning (EDL) based approaches attempt to address these issues, but they often struggle with conflicting evidence due to the limitations of the Dempster-Shafer combination rule, leading to unreliable decisions. To address these challenges, we propose the Alternating Progressive Learning Network (APLN), specifically designed to enhance EDL-based methods in incomplete MVC scenarios. Our approach mitigates bias from corrupted observed data by first applying coarse imputation, followed by mapping the data to a latent space. In this latent space, we progressively learn an evidence distribution aligned with the target domain, incorporating uncertainty considerations through EDL. Additionally, we introduce a conflict-aware Dempster-Shafer combination rule (DSCR) to better handle conflicting evidence. By sampling from the learned distribution, we optimize the latent representations of missing views, reducing bias and enhancing decision-making robustness. Extensive experiments demonstrate that APLN, combined with DSCR, significantly outperforms traditional methods, particularly in environments characterized by high uncertainty and conflicting evidence, establishing it as a promising solution for incomplete multi-view classification.
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