Junfeng Wang Chun Chen Can Wang Jian Pei Jiajun Bu Ziyu Guan Wei Vivian Zhang Can we learn a template-independent wrapper for news article extraction from a single training site? 1345-1354 2009 KDD http://doi.acm.org/10.1145/1557019.1557163 conf/kdd/2009 db/conf/kdd/kdd2009.html#WangCWPBGZ09