“…Some experimental search systems that make use of genre have been proposed or developed (Bretan, Dewe, Hallberg, Wolkert, & Karlgren, 1998;Glover, Lawrence, Gordon, Birmingham, & Giles, 2001;Roussinov & Chen, 2001;Stein et al, 2011;Xu, Cao, Li, Craswell, & Huang, 2007), but in most cases these systems are based on filtering, categorizing or labeling search results by genre, which assumes that searchers are able to specify their preferred genres while searching. This is a tenuous assumption given what is known about the anomalous state of human information needs (Belkin, 1980).…”