An efficient mining algorithm for maximal frequent patterns in uncertain graph database

Article type: Research Article

Authors: Li, Feng^{; *}

Affiliations: School of Computer and Communication, Hunan Institute of Engineering, Hunan, China

Correspondence: [*] Corresponding author. Feng Li, School of Computer and Communication, Hunan Institute of Engineering, Hunan, China. E-mail: [email protected].

Abstract: Mining maximal frequent patterns is significant in many fields, but the mining efficiency is often low. The bottleneck lies in too many candidate subgraphs and extensive subgraph isomorphism tests. In this paper we propose an efficient mining algorithm. There are two key ideas behind the proposed methods. The first is to divide each edge of every certain graph (converted from equivalent uncertain graph) and build search tree, avoiding too many candidate subgraphs. The second is to search the tree built in the first step in order, avoiding extensive subgraph isomorphism tests. The evaluation of our approach demonstrates the significant cost savings with respect to the state-of-the-art approach not only on the real-world datasets as well as on synthetic uncertain graph databases.

Keywords: Uncertain graph, maximal frequent pattern, data mining

DOI: 10.3233/JIFS-200237

Journal: Journal of Intelligent & Fuzzy Systems, vol. 39, no. 5, pp. 7021-7033, 2020