J. Stefanowski et D. Vanderpooten, Induction of decision rules in classification and discovery-oriented perspectives, INT J INTEL, 16(1), 2001, pp. 13-27
This paper discusses induction of decision rules from data tables represent
ing information about a set of objects described by a set of attributes. If
the input data contains inconsistencies, rough sets theory can be used to
handle them. The most popular perspectives of rule induction are classifica
tion and knowledge discovery. The evaluation of decision rules is quite dif
ferent depending on the perspective. Criteria for evaluating the quality of
a set of rules are presented and discussed. The degree of conflict and the
possibility of achieving a satisfying compromise between criteria relevant
to classification and criteria relevant to discovery are then analyzed. Fo
r this purpose, we performed an extensive experimental study on several wel
l-known data sets where: we compared two different approaches: (1) the popu
lar rough set based rule induction algorithm LEM2 generating classification
rules, (2) our own algorithm Explore-specific for discovery perspective. (
C) 2001 John Wiley & Sons, Inc.