Media type: E-Article Title: Progress in Artificial Intelligence: Sentiment Analysis of News Titles Contributor: Loureiro, Daniel; Marreiros, Goreti; Neves, José imprint: Springer Berlin Heidelberg, 2011 Published in: Progress in Artificial Intelligence Language: Not determined DOI: 10.1007/978-3-642-24769-9_1 ISSN: 0302-9743; 1611-3349 Origination: Footnote: