Abstract

This paper introduced a density grid-based data stream clustering algorithm.Through the introduction of the "subject degree",the traditional density grid-based clustering algorithm for data stream was improved by taking the data points within the grid as the grid density,thereby resolving the problem of data points belonging to two classes in one grid as well as the treatment of boundary points.Therefore,not only the high efficiency of the grid-based algorithm was utilized,but also the clustering accuracy was raised significantly.

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