Identifying Multi-Dimensional Co-Clusters in Tensors Based on Hyperplane Detection in Singular Vector Spaces

PLoS One. 2016 Sep 6;11(9):e0162293. doi: 10.1371/journal.pone.0162293. eCollection 2016.

Abstract

Co-clustering, often called biclustering for two-dimensional data, has found many applications, such as gene expression data analysis and text mining. Nowadays, a variety of multi-dimensional arrays (tensors) frequently occur in data analysis tasks, and co-clustering techniques play a key role in dealing with such datasets. Co-clusters represent coherent patterns and exhibit important properties along all the modes. Development of robust co-clustering techniques is important for the detection and analysis of these patterns. In this paper, a co-clustering method based on hyperplane detection in singular vector spaces (HDSVS) is proposed. Specifically in this method, higher-order singular value decomposition (HOSVD) transforms a tensor into a core part and a singular vector matrix along each mode, whose row vectors can be clustered by a linear grouping algorithm (LGA). Meanwhile, hyperplanar patterns are extracted and successfully supported the identification of multi-dimensional co-clusters. To validate HDSVS, a number of synthetic and biological tensors were adopted. The synthetic tensors attested a favorable performance of this algorithm on noisy or overlapped data. Experiments with gene expression data and lineage data of embryonic cells further verified the reliability of HDSVS to practical problems. Moreover, the detected co-clusters are well consistent with important genetic pathways and gene ontology annotations. Finally, a series of comparisons between HDSVS and state-of-the-art methods on synthetic tensors and a yeast gene expression tensor were implemented, verifying the robust and stable performance of our method.

MeSH terms

  • Algorithms*
  • Animals
  • Caenorhabditis elegans / genetics
  • Caenorhabditis elegans / growth & development
  • Cell Cycle / genetics
  • Cluster Analysis
  • Data Mining / statistics & numerical data*
  • Datasets as Topic
  • Disease / genetics*
  • Gene Expression
  • Gene Ontology
  • Genes, Fungal*
  • Genes, Helminth*
  • Humans
  • Molecular Sequence Annotation
  • Saccharomyces cerevisiae / genetics
  • Saccharomyces cerevisiae / growth & development

Grants and funding

This work is supported by the Hong Kong Research Grants Council (Project CityU 11214814) and the National Natural Science Funds of China (Project No. 31100958).