Analyzing Transitive Rules on a Hybrid Concept Discovery System

  • Authors:
  • Yusuf Kavurucu;Pinar Senkul;Ismail Hakki Toroslu

  • Affiliations:
  • Computer Engineering, Middle East Technical University, Ankara, Turkey;Computer Engineering, Middle East Technical University, Ankara, Turkey;Computer Engineering, Middle East Technical University, Ankara, Turkey

  • Venue:
  • HAIS '09 Proceedings of the 4th International Conference on Hybrid Artificial Intelligence Systems
  • Year:
  • 2009

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Abstract

Multi-relational concept discovery aims to find the relational rules that best describe the target concept. An important challenge that relational knowledge discovery systems face is intractably large search space and there is a trade-off between pruning the search space for fast discovery and generating high quality rules. Combining ILP approach with conventional association rule mining techniques provides effective pruning mechanisms. Due to the nature of Apriori algorithm, the facts that do not have common attributes with the target concept are discarded. This leads to efficient pruning of search space. However, under certain conditions, it fails to generate transitive rules, which is an important drawback when transitive rules are the only way to describe the target concept. In this work, we analyze the effect of incorporating unrelated facts for generating transitive rules in an hybrid relational concept discovery system, namely C2D, which combines ILP and Apriori.