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The data stream problem has been studied extensively in recent years. This is because the great in collection of the nature of data stream. The nature of stream data makes it essential to use algorithms which require only one pass over the data. And single-scan, stream analysis methods have been proposed in this context. However, clustering is still a(More)
Data stream processing is now commonplace in applications such as network monitoring, sensor networks, telecommunications data management, Web personalization, manufacturing and others. The continuous sliding-window query model is used widely in data stream management systems. However, the existing sliding window query models fail to answer some of the(More)
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