Many of our daily life decisions rely on demographic data, which is a good indicator for
closeness of people. However, the lack of these data for many online systems let them …

E-commerce systems employ recommender systems to enhance the customer loyalty and
hence increasing the cross-selling of products. However, choosing appropriate similarity …

Memory-based collaborative recommender system (CRS) computes the similarity between
users based on their declared ratings. However, not all ratings are of the same importance to …

Recommender systems are widespread due to their ability to help Web users surf the
Internet in a personalized way. For example, collaborative recommender system is a …

Similarity measures are crucial for electing neighbors for the users of recommender systems.
However, the massive amount of the processed data in such applications may hide the inner …