“…Although a number of studies have examined the literature of library and information science (e.g., Åström, 2007, 2010Chen, Ibekwe-SanJuan, & Hou, 2010;Cronin & Meho, 2007;Donohue, 1972;Harter & Hooten, 1992;Harter, Nisonger, & Weng, 1993;Persson, 1994;Rice, 1990;White & McCain, 1998;Zhao & Strotmann, 2008a, 2008b, the nature of the literature concerning information retrieval has not been so thoroughly investigated (Ding, Chowdhury, & Foo, 2000;Ding, Yan, Frazho, & Caverlee, 2009;Ellis, Allen, & Wilson, 1999). In this paper, our main goal is to visualize and map the intellectual and cognitive structures of the IR subfield.…”