Figure 2

An illustrative example for the SNAD model. This figure illustrates the workflow of the SNAD model. First, a bipartite graph of user-subject accesses is constructed (part a), which is subsequently represented as a binary matrix (part b). This matrix is then transformed using "inverse document frequency" (part c), from which the similarities between pairs of users are computed (part d) and from which a local access network associated with a subject s₃ is built(part e). The similarities of the local access network and its five subnetworks are calculated (part f) and finally, the scores for each access associated with subject s₃ are assessed.