1. DBpedia: A nucleus for a web of open data;Auer,2007
2. The Use of MMR, diversity-based reranking for reordering documents and producing summaries;Carbonell,1998
3. Yago: a core of semantic knowledge;Suchanek,2007
4. Statistical Language Models for Information Retrieval;Zhai,2008
5. An axiomatic approach for result diversification;Gollapudi,2009