Pattern mining on stars with FP-growth

  • Authors:
  • Andreia Silva;Cláudia Antunes

  • Affiliations:
  • Instituto Superior Técnico, Lisboa;Instituto Superior Técnico, Lisboa

  • Venue:
  • MDAI'10 Proceedings of the 7th international conference on Modeling decisions for artificial intelligence
  • Year:
  • 2010

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Abstract

Most existing data mining (DM) approaches look for patterns in a single table. Multi-relational DM approaches, on the other hand, look for patterns that involve multiple tables. In recent years, the most common DM techniques have been extended to the multirelational case, but there are few dedicated to star schemas. These schemas are composed of a central fact table, linking a set of dimension tables, and joining all the tables before mining may not be a feasible solution. This work proposes a method for frequent pattern mining in a star schema based on FP-Growth. It does not materialize the entire join between the tables. Instead, it constructs an FP-Tree for each dimension and then combines them to form a super FP-Tree, that will serve as input to FP-Growth.