1. Semantic search;Guha,2003
2. Exploratory search: from finding to understanding;Marchionini;Commun. ACM,2006
3. Linked education: interlinking educational resources and the web of data;Dietze,2012
4. Survey of semantic annotation platforms;Reeve,2005
5. Learning about Art History by exploratory search, contextual view and social tags;Arends,2012