PrefixSpan: Mining sequential patterns efficiently by prefix-projected pattern growth

Intelligent Database Systems Research Lab. School of Computing Science, Simon Fraser University Burnaby, BC, Canada V5A 1S6 E-mail: {peijian, han, mortazav, hlpinto}@cs.sfu.ca ... Qiming Chen Umeshwar Dayal Mei-Chun Hsu Hewlett-Packard Labs. Palo Alto, California 94303-...