Information retrieval 71 Information storage and retrieval systems 18 Information behavior 14 Computer programs 10 Data processing 10 Information literacy 9 Ontologies (Information retrieval) 9 Evaluation 7 Semantic Web 7 Dissertations 6 Dissertations, Academic 6 Information services 6 Data mining 5 Study and teaching 5 Study and teaching (Higher) 4 Content-based image retrieval 3 Digital techniques 3 Image processing 3 Multimedia systems 3 Natural language processing (Computer science) 3 Recommender systems (Information filtering) 3 Semantic integration (Computer systems) 3 Semantics 3 Social aspects 3 Web-based instruction 3 Artificial intelligence 2 Attitudes 2 Computer software 2 Computer-assisted instruction 2 Cross-language information retrieval 2