论文标题
基于部分潜在因素的多视图子空间学习
Partially latent factors based multi-view subspace learning
论文作者
论文摘要
多视图子空间群集在高维数据分析中总是表现良好,但对数据表示质量敏感。为此,提出了两级融合策略,将表示表示学习到多视图子空间聚类的过程中。本文首先提出了一种新型的矩阵分解方法,该方法可以将耦合一致和互补信息与多种观察结果分开。根据获得的潜在表示,我们进一步提出了两种子空间聚类策略:特征级融合和子空间级层次结构策略。特征级方法从多个视图中串联了各种潜在表示,因此原始问题将其退化为单视图子空间聚类过程。子空间级层次结构方法对来自每种视图的相应互补和一致的潜在表示进行了不同的自我表达重建过程,即对不同类型的子空间表示施加的先前约束与适当的输入因子有关。最后,对实际数据集的广泛实验结果通过与某些最新的子空间聚类算法进行比较,证明了我们提出的方法的优越性。
Multi-view subspace clustering always performs well in high-dimensional data analysis, but is sensitive to the quality of data representation. To this end, a two stage fusion strategy is proposed to embed representation learning into the process of multi-view subspace clustering. This paper first propose a novel matrix factorization method that can separate the coupling consistent and complementary information from observations of multiple views. Based on the obtained latent representations, we further propose two subspace clustering strategies: feature-level fusion and subspace-level hierarchical strategy. Feature-level method concatenates all kinds of latent representations from multiple views, and the original problem therefore degenerates to a single-view subspace clustering process. Subspace-level hierarchical method performs different self-expressive reconstruction processes on the corresponding complementary and consistent latent representations coming from each view, i.e. the prior constraints imposed on different types of subspace representations are related to the appropriate input factors. Finally, extensive experimental results on real-world datasets demonstrate the superiority of our proposed methods by comparing against some state-of-the-art subspace clustering algorithms.