Alka Arora Shuchita Upadhyaya Rajni Jain Learning Patterns from Clusters Using Reduct. 389-398 2008 RSCTC http://dx.doi.org/10.1007/978-3-540-88425-5_40 conf/rsctc/2008 db/conf/rsctc/rsctc2008.html#AroraUJ08