提出新方法提升多视图聚类可信度,解决噪声干扰与融合偏差问题。
THCRL: Trusted Hierarchical Contrastive Representation Learning for Multi-View Clustering
- 用UNet结合去噪机制实现多视图可信融合
- 引入近邻对比学习,增强同簇样本相似性
- 适合处理含噪声的多视图数据聚类任务
多视图聚类(MVC)近年来受到广泛关注,其通过学习共识表示对数据样本进行分组。然而,当前面临的关键挑战是不可信融合问题,主要源于两点:一是现有方法常忽略各视图中的固有噪声;二是传统基于对比学习的MVC方法通常依赖同一实例在不同视图间的相似性计算,忽视了同簇内最近邻的结构信息,导致融合方向错误。为此,本文提出可信分层对比表示学习(THCRL),包含两个核心模块:一是深度对称分层融合(DSHF)模块,采用集成多级去噪机制的UNet架构,实现多视图数据的可信融合;二是平均K近邻对比学习(AKCL)模块,将融合表示与视图特定表示对齐,不局限于同一实例跨视图匹配,而是强化同簇样本间的表示相似性,从而提升融合表示的置信度。大量实验表明,THCRL在深度多视图聚类任务中达到当前最优性能。
原文摘要 · Abstract (English)
Multi-View Clustering (MVC) has garnered increasing attention in recent years. It is capable of partitioning data samples into distinct groups by learning a consensus representation. However, a significant challenge remains: the problem of untrustworthy fusion. This problem primarily arises from two key factors: 1) Existing methods often ignore the presence of inherent noise within individual views; 2) In traditional MVC methods using Contrastive Learning (CL), similarity computations typically rely on different views of the same instance, while neglecting the structural information from nearest neighbors within the same cluster. Consequently, this leads to the wrong direction for multi-view fusion. To address this problem, we present a novel Trusted Hierarchical Contrastive Representation Learning (THCRL). It consists of two key modules. Specifically, we propose the Deep Symmetry Hierarchical Fusion (DSHF) module, which leverages the UNet architecture integrated with multiple denoising mechanisms to achieve trustworthy fusion of multi-view data. Furthermore, we present the Average K-Nearest Neighbors Contrastive Learning (AKCL) module to align the fused representation with the view-specific representation. Unlike conventional strategies, AKCL enhances representation similarity among samples belonging to the same cluster, rather than merely focusing on the same sample across views, thereby reinforcing the confidence of the fused representation. Extensive experiments demonstrate that THCRL achieves the state-of-the-art performance in deep MVC tasks.
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