“…Log data has been used in conjunction with other types of user evaluation strategies including usability studies providing the core data for our analyses with the intention to investigate human–computer interactions, especially the various aspects of online information retrieval such as information search and navigation behavior. Research in this area comes from several different research groups, such as digital library groups (Cooper, 2001; Jones, Cunningham, & McNab, 1998), Web data mining groups (Borges & Levene, 1999; Cooley, Tan, & Srivastava, 1999; Spiliopoulou & Faulstich, 1998) and the general Web information retrieval community (Jansen, 2000; Moukdad & Large, 2001; Spink, Bateman, & Jansen, 1999). These research groups have investigated several subareas pertaining to online search and navigation activity such as (a) investigating searchers' performance (Mat‐Hassan & Levene, 2001; Rumpradit & Donnell, 1999; Su, 1992), (b) establishing a profile of an effective searcher (Fenichel, 1981; Hsieh‐Yee, 1993; Marchionini, 1989), (c) establishing users' searching characteristics (Jansen, 2000; Moukdad & Large, 2001; Silverstein, Henziger, Marais, & Moricz, 1999; Spink, Bateman, & Jansen, 1999), and (d) understanding users' navigation behavior (Borges & Levene, 1999; Cooley et al, 1999; Spiliopoulou & Faulstich, 1999).…”