“…As such, we constructed a dataset 2 using data from various sources, which we summarize in Table 1. This dataset includes: (i) adult queries from the TREC data [26], (ii) queries first introduced in the work conducted by Madrazo Azpiazu et al [23] (henceforth referred to as Sven), each indicating whether it was formulated by a child (ages 8 to 11) or adult, and (iii) queries formulated by children ages 7 to 11 years old, which we refer to as CAST data 3 , that resulted from several user studies conducted to examine children's search behavior [1,2,4,8,10].…”