Chang-Hung Lee Jian Chih Ou Ming-Syan Chen Progressive Weighted Miner: An Efficient Method for Time-Constraint Mining. 449-460 2003 conf/pakdd/2003 PAKDD http://link.springer.de/link/service/series/0558/bibs/2637/26370449.htm db/conf/pakdd/pakdd2003.html#LeeOC03