提出双驱动图聚类网络,有效过滤噪声提升聚类性能。
Dual Boost-Driven Graph-Level Clustering Network
- 通过可学习变换矩阵优化全局特征贡献,生成高质量图表示。
- 在聚类中识别并抑制干扰信息,提升多视图融合准确性。
- 在6个基准数据集上超越现有最优方法,适合图聚类任务研究者。
图级聚类是图学习中的关键挑战。尽管深度学习与表征学习的结合已带来一定进展,但现有方法仍存在两个主要问题:一是原始图结构含噪声,二是在特征传播和池化过程中,噪声随信息传递逐步累积至图级嵌入,掩盖了有利于聚类的信息,导致性能受限。为此,我们提出一种新型双驱动图级聚类网络(DBGCN),在统一框架中交替提升聚类能力与过滤干扰信息。具体而言,在池化阶段,通过评估全局特征贡献并利用可学习变换矩阵进行优化,生成高质量图级表示,增强模型推理能力;同时,为实现可靠聚类,先基于图级表示间的相似性评估,识别并抑制有害信息,为多视图融合提供更精准指导。大量实验表明,DBGCN在六个基准数据集上均优于当前最优图级聚类方法。
原文摘要 · Abstract (English)
Graph-level clustering remains a pivotal yet formidable challenge in graph learning. Recently, the integration of deep learning with representation learning has demonstrated notable advancements, yielding performance enhancements to a certain degree. However, existing methods suffer from at least one of the following issues: 1. the original graph structure has noise, and 2. during feature propagation and pooling processes, noise is gradually aggregated into the graph-level embeddings through information propagation. Consequently, these two limitations mask clustering-friendly information, leading to suboptimal graph-level clustering performance. To this end, we propose a novel Dual Boost-Driven Graph-Level Clustering Network (DBGCN) to alternately promote graph-level clustering and filtering out interference information in a unified framework. Specifically, in the pooling step, we evaluate the contribution of features at the global and optimize them using a learnable transformation matrix to obtain high-quality graph-level representation, such that the model's reasoning capability can be improved. Moreover, to enable reliable graph-level clustering, we first identify and suppress information detrimental to clustering by evaluating similarities between graph-level representations, providing more accurate guidance for multi-view fusion. Extensive experiments demonstrated that DBGCN outperforms the state-of-the-art graph-level clustering methods on six benchmark datasets.
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