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This paper studies the incremental updating problem of frequent itemsets when the transaction database and the minimum support change in the Web information extraction. An algorithm of incremental FP_Growth mining based on frequent pattern tree is proposed and used to extract the transaction data in the second-hand IT trading site and generate association rules. Analysis and test show that the algorithm...
Due to the constantly updated characteristic of data in Web, this paper studies the decision tree technology and how to use in the field of Web information extraction. According to the datasets by information extraction, a decision tree of agricultural products market is constructed by C4.5/C5.0 algorithm, with constantly updated data to update the decision tree, and then generate the understandable...
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