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General bound estimation method for pattern measures over uncertain datasets
WANG Ju, LIU Fuxian, JIN Chunjie
Journal of Computer Applications    2018, 38 (1): 165-170.   DOI: 10.11772/j.issn.1001-9081.2017061582
Abstract490)      PDF (906KB)(276)       Save
Concerning the problem of bound estimation for pattern measures in constraint-based pattern mining, a general bound estimation method for pattern measures over uncertain datasets was proposed. According to the characteristics of uncertain transaction datasets with weight, firstly, a general estimation framework for common pattern measures was designed. Secondly, a fast estimation method for the upper bound of pattern measures under the designed framework was provided. Finally, two commonly used pattern measures were introduced to verify the feasibility of the proposed method. In the experiment, the runtime and memory usage of the Potential High-Utility Itemsets UPper-bound-based mining (PHUI-UP) algorithm with transaction weighted utilization, the proposed upper bound and the actual upper bound were compared. The experimental results show that the proposed method can take less memory usage and runtime to realize the estimation of the upper bound of pattern utilization.
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