Abstract
As processed data is relatively dense or the support is small in weighted frequent patterns mining process, the number of frequent patterns which meet the conditions will be exponential growth, and mining all frequent patterns will need too much computation. Hence, mining the maximal weighted frequent patterns containing all frequent patterns has less calculation, and it has more utility value. Aiming at the process of maximal weighted frequent patterns mining, an efficient algorithm, based on WIdT-Trees, is proposed to discover maximal weighted frequent patterns. In the algorithm, WIdT-Tree is optimized from WIT-Tree. The dTidset strategy is used to calculate the weighted support of frequent k-itemsets, and the nodes with equal extended weighted support are pruned off in order to reduce the computational cost and decrease the search space complexity. Algorithms are tested and compared on real and synthetic datasets and experimental results show that our algorithm is more efficient and scalable.
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Acknowledgments
This work is supported by the National Natural Science Foundation Item of China under Grant No. 81273649, Natural Science Foundation Item of Heilongjiang Province under Grant No.F201434, and the Graduate Student Innovation and Research Item of Heilongjiang University under Grant NO.YJSCX2016-018HLJU.
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Qin, Q., Tan, L. (2016). An Efficient Mining Algorithm for Maximal Weighted Frequent Patterns Based on WIdT-Trees. In: Yin, H., et al. Intelligent Data Engineering and Automated Learning – IDEAL 2016. IDEAL 2016. Lecture Notes in Computer Science(), vol 9937. Springer, Cham. https://doi.org/10.1007/978-3-319-46257-8_64
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DOI: https://doi.org/10.1007/978-3-319-46257-8_64
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