Table 2 Item-to-item similarity matrix constructed with information in Table 1
I1I2I3
I1 = 1 = 0.76 = 0.78
I2 = 0.76 = 1 = 0.86
I3 = 0.78 = 0.86 = 1
• Value represents the similarity between item j and item j´, obtained using cosine similarity.