2Jiawei Han ,Micheline Kamber ,Jian Pei.Date Mining Concepts and Techiques Third Edition[M].BeiJing:China Machine Press.2012.
3Robert C ool ey, Bam shad M obasher, Jai deep Sri vast ava[M].D at a Preparat i on f or M i ni ng W orl d W i de Web Brow si ng Pat terns. Know ! edge and Inform at i on System s,1999.
4Fayyad U.Data mining and knowledge discovery in databases im- plications for scientific databases [C]//International Conference on Scientific Database Management, 1997:51-55.
