Jianwei Zhang 0002 Yukiko Kawai Tadahiko Kumamoto Katsumi Tanaka A Novel Visualization Method for Distinction of Web News Sentiment. 181-194 2009 WISE http://dx.doi.org/10.1007/978-3-642-04409-0_22 conf/wise/2009 db/conf/wise/wise2009.html#ZhangKKT09