Oren Etzioni Michael J. Cafarella Doug Downey Ana-Maria Popescu Tal Shaked Stephen Soderland Daniel S. Weld Alexander Yates Methods for Domain-Independent Information Extraction from the Web: An Experimental Comparison. 391-398 2004 conf/aaai/2004 AAAI db/conf/aaai/aaai2004.html#EtzioniCDPSSWY04