haracterize rules, classification, clustering Functional dependency, regression trees Similar s ... Background of Data MiningData 축적 정보기술의 발달에 따른 대규모 데이타베이스 구축 Data Warehouse 대용량 Data Base의 활용 정제 ... from large volume of actual databasebeyond databases and catalogs exclude well-known knowledge
, Kim et. al. 1999). Later, tools were developed which were based on multi-criteria decision aid ... ustomers based on the rough set theory. The concept of a rough set appeared to be an effective tool for ... ustomer information system describes a set of customers by a set of multi-valued attributes, called c