OPTOC-based clustering analysis of gene expression profiles in spectral space

Shuanhu Wu, Alan Wee Chung Liew, Hong Yan

    Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

    Abstract

    In this paper, a new feature extracting method and clustering scheme in spectral space for gene expression data was proposed. We model each member of same cluster as the sum of cluster's representative term and experimental artifacts term. More compact clusters and hence better clustering results can be obtained through extracting essential features or reducing experimental artifacts. In term of the periodicity of gene expression profile data, features extracting is performed in DCT domain by soft-thresholding de-noising method. Clustering process is based on OPTOC competitive learning strategy. The results for clustering real gene expression profiles show that our method is better than directly clustering in the original space. © Springer-Verlag Berlin Heidelberg 2005.
    Original languageEnglish
    Title of host publicationAdvances in Neural Networks - ISNN 2005
    Subtitle of host publicationSecond International Symposium on Neural Networks, Chongqing, China, May 30 - June 1, 2005, Proceedings, Part III
    EditorsJun Wang, Xiao-Feng Liao, Zhang Yi
    PublisherSpringer 
    Pages709-718
    ISBN (Electronic)978-3-540-32069-2
    ISBN (Print)978-3-540-25914-5
    DOIs
    Publication statusPublished - 2005
    Event2nd International Symposium on Neural Networks (ISNN 2005) - Chongqing, China
    Duration: 30 May 20051 Jun 2005

    Publication series

    NameLecture Notes in Computer Science
    Volume3498
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349

    Conference

    Conference2nd International Symposium on Neural Networks (ISNN 2005)
    PlaceChina
    CityChongqing
    Period30/05/051/06/05

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