|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|4944141||1363983||2018||14 صفحه PDF||ندارد||دانلود رایگان|
We propose in this paper a novel approach for unsupervised clustering of servicesâ behaviors. These behaviors are modeled as multivariate time series that capture the evaluation of several service quality attributes for a period of time. The importance weights of quality attributes are derived based on the Shannonâs entropy concept and the service data is flattened in a format that is convenient for clustering. The flattening process spans over a time oriented aggregation transformation, which leverages Haar reduction. The reduction is modeled as a maximization of an objective function. The absence of ground truth is tackled by performing a set of tests to determine the best number of clusters and clustering algorithms. Extensive experiments were conducted to validate the proposed unsupervised clustering approach.
Journal: Information Sciences - Volume 422, January 2018, Pages 558-571