应对多源噪声的多视图聚类新方法,提升真实场景下聚类稳定性。
RAC-DMVC: Reliability-Aware Contrastive Deep Multi-View Clustering under Multi-Source Noise
- 构建可靠性图指导噪声环境下的鲁棒表示学习
- 在五大数据集上优于现有方法,噪声比例变化下表现稳定
- 适合处理含缺失与观测噪声的真实多视图数据
多视图聚类(MVC)旨在无监督地将多视图数据划分为不同簇,是基础但具挑战性的任务。为提升其在真实场景中的适用性,本文针对更复杂的多源噪声问题(包括缺失噪声和观测噪声)提出新框架RAC-DMVC。该框架通过构建可靠性图,引导噪声环境下鲁棒表示学习:为缓解观测噪声,引入跨视图重建以增强数据级鲁棒性,并设计可靠性感知的噪声对比学习,减轻噪声表示导致的正负样本选择偏差;为应对缺失噪声,设计双注意力插补模块,捕捉跨视图共享信息的同时保留视图特有特征;此外,自监督聚类蒸馏模块进一步优化表示并提升聚类性能。在五个基准数据集上的大量实验表明,RAC-DMVC在多个评估指标上超越当前最优方法,且在不同噪声比例下均保持优异性能。
原文摘要 · Abstract (English)
Multi-view clustering (MVC), which aims to separate the multi-view data into distinct clusters in an unsupervised manner, is a fundamental yet challenging task. To enhance its applicability in real-world scenarios, this paper addresses a more challenging task: MVC under multi-source noises, including missing noise and observation noise. To this end, we propose a novel framework, Reliability-Aware Contrastive Deep Multi-View Clustering (RAC-DMVC), which constructs a reliability graph to guide robust representation learning under noisy environments. Specifically, to address observation noise, we introduce a cross-view reconstruction to enhances robustness at the data level, and a reliability-aware noise contrastive learning to mitigates bias in positive and negative pairs selection caused by noisy representations. To handle missing noise, we design a dual-attention imputation to capture shared information across views while preserving view-specific features. In addition, a self-supervised cluster distillation module further refines the learned representations and improves the clustering performance. Extensive experiments on five benchmark datasets demonstrate that RAC-DMVC outperforms SOTA methods on multiple evaluation metrics and maintains excellent performance under varying ratios of noise.
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