Topical Diversity and Relevance Feedback.

@inproceedings{meij-2009-topical, author = {Edgar Meij and Jiyin He and Wouter Weerkamp and Maarten de Rijke}, editor = {Ellen M. Voorhees and Lori P. Buckland}, title = {{Topical Diversity and Relevance Feedback}}, booktitle = {{Proceedings of The Eighteenth Text REtrieval Conference, TREC 2009, Gaithersburg, Maryland, USA, November 17-20, 2009}}, series = {NIST Special Publication}, volume = {500-278}, publisher = {National Institute of Standards and Technology (NIST)}, year = {2009}, url = {http://trec.nist.gov/pubs/trec18/papers/uamsterdam-derijke.RF.pdf} }