Figure 6. Number of hops in a boxes traversal

<p>From the 55 box traversals (see figure 6), 15 times users concluded their subject-based browsing session in their third hop. This is the most popular number of hops from one box to another according to the semantic relations of the subject headings that each box corresponds to (see figure 6). Following that, in a descending order, users concluded their subject-based browsing session in one, two and four hops respectively. The fact that 33 out of 55 box traversals were concluded in one, two or three hops leads to the conclusion that the majority of the users conclude their subject browsing process in a rather short period of time.</p>