M. Atzmueller. WIREs: Data Mining and Knowledge Discovery5 (1):
Subgroup discovery is a broadly applicable descriptive data mining technique for identifying interesting subgroups according to some property of interest.
This article summarizes fundamentals of subgroup discovery, before it reviews algorithms and further advanced methodological issues. In addition, we briefly discuss tools and applications of subgroup discovery approaches. In that context, we also discuss experiences and lessons learned and outline future directions in order to show the advantages and benefits of subgroup discovery.