Media type: E-Article Title: Lecture Notes in Computer Science: Collaborative Learning of Term-Based Concepts for Automatic Query Expansion Contributor: Klink, Stefan; Hust, Armin; Junker, Markus; Dengel, Andreas imprint: Springer Berlin Heidelberg, 2002 Published in: Lecture Notes in Computer Science Language: Not determined DOI: 10.1007/3-540-36755-1_17 ISSN: 0302-9743 Origination: Footnote: