Abstract
On the basis of the shortcoming of the existed algorithm, this paper probes into sliding windows pattern and introduces an efficient algorithm for data mining frequent pattern over sliding windows. A PSW-tree pattern is set in the algorithm to store frequent and critical pattern in data mining. On this basis, the paper presents a rapid mining algorithmPSW algorithm. In the experiment IBM data generator is used to produce generated data, which proves the validity and better space efficiency of the algorithm.
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