M. Punithavalli

  1. Clustering Time Series Data Stream - A Literature Survey.

    Authors: M. Punithavalli, V.Kavitha
    Subjects: Information Retrieval
    Abstract

    Mining Time Series data has a tremendous growth of interest in today's world.
    To provide an indication various implementations are studied and summarized to
    identify the different problems in existing applications. Clustering time
    series is a trouble that has applications in an extensive assortment of fields
    and has recently attracted a large amount of research. Time series data are
    frequently large and may contain outliers. In addition, time series are a
    special type of data set where elements have a temporal ordering.

  2. An Analytical Study on Behavior of Clusters Using K Means, EM and K* Means Algorithm.

    Authors: M. Punithavalli, G. Nathiya, S. C. Punitha
    Subjects: Learning
    Abstract

    Clustering is an unsupervised learning method that constitutes a cornerstone
    of an intelligent data analysis process. It is used for the exploration of
    inter-relationships among a collection of patterns, by organizing them into
    homogeneous clusters. Clustering has been dynamically applied to a variety of
    tasks in the field of Information Retrieval (IR). Clustering has become one of
    the most active area of research and the development.

  3. Document Clustering using Sequential Information Bottleneck Method.

    Authors: P.J.Gayathri, S.C. Punitha, M. Punithavalli
    Subjects: Information Retrieval
    Abstract

    This paper illustrates the Principal Direction Divisive Partitioning (PDDP)
    algorithm and describes its drawbacks and introduces a combinatorial framework
    of the Principal Direction Divisive Partitioning (PDDP) algorithm, then
    describes the simplified version of the EM algorithm called the spherical
    Gaussian EM (sGEM) algorithm and Information Bottleneck method (IB) is a
    technique for finding accuracy, complexity and time space.

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