“…So, an URL url ∈ N can be represented as a set of Topics, i.e., url = {T 1 , T 2 , T 3 , ..., T m }. Now, if we considerthe user profile is also represented by a set of interested topics, we can write, UP = {I 1 , I 2 , I 3 , ..., I k } (for user profile generation, see details in [11]). This said, we can define MISS as follows:…”