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In this paper, we attempt to handle the maintenance of sequential patterns. New transactions may come from both the new customers and old customers. A fast updated sequential pattern tree (called FUSP-tree) structure is proposed to make the tree update process become easy. An incremental FUSP-tree maintenance algorithm is also proposed for reducing the execution time in reconstructing the tree. The...
In the past, the FUFP-tree maintenance algorithm is proposed to efficiently handle the association rules in incremental mining. In this paper, we attempt to modify the FUFP-tree maintenance algorithm for maintaining sequential patterns based on the concept of pre-large sequences to reduce the need for rescanning original databases in incremental mining. A fast updated sequential pattern trees (FUSP...
In this paper, the structure of the prelarge tree is proposed to maintain association rules for record modification based on the concept of pre-large itemsets. Due to the properties of the pre-large concept, the proposed algorithm can achieve a good execution time for tree maintenance especially when each time a small number of records are modified. Experimental results show that the proposed prelarge-tree...
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