Hiding sensitive rules using SIF-IDF to preserve privacy in extracting association rules
Nowadays, data mining and privacy preserving are two important and fundamental issues for organizations, individuals, and data miners. Data mining discovers the relations among the items of a database. Some of the discovered relations are private for organizations and individuals and must not be available to others. This information is called sensitive information and the database owner tries to hide it. Hiding sensitive information has some side effects for the database and insensitive information including loss of insensitive information, creation of new information that doesn’t exist in the original database (ghost rules), dissimilarity in the database, etc. All the presented algorithms for privacy preserving try to sanitize databases with the least side effects. In this paper, an algorithm based on SIF-IDF algorithm in order to hide sensitive rules is proposed. In the proposed algorithm, heuristic technique and support-based approach are used for sanitizing databases. The aim of the proposed algorithm is reducing the side effects of database sanitization including loss of rules, runtime reduction and hiding failure. The proposed algorithm is assessed by 1.b, MDSRRC, and SIF-IDF algorithms and the results show the efficacy of the proposed algorithm.
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