Topic Difficulty Prediction in Entity Ranking. - Anne-Marie Vercoustre; Jovan Pehcevski; Vladimir Naumovski (INEX, 2008)

Entity ranking in Wikipedia: utilising categories, links and topic difficulty prediction. - Jovan Pehcevski; James A. Thom; Anne-Marie Vercoustre; Vladimir Naumovski (Inf. Retr., 2010)