Ruihua Song Haifeng Liu 0001 Ji-Rong Wen Wei-Ying Ma Learning important models for web page blocks based on layout and content analysis. 14-23 2004 6 SIGKDD Explor. 2 https://doi.org/10.1145/1046456.1046459 https://www.wikidata.org/entity/Q114891934 db/journals/sigkdd/sigkdd6.html#SongLWM04