For years, promoting products from the same category that the customers previously purchased from has always been the mainstream in recommendation systems, since it is more likely that products from the same category will match and correspond with customers existing purchase preferences. However, the focus of the recommender system research community has shifted their attention from accuracy-based recommendation strategy towards diversity-based recommendation strategy, this entails offering products from new category that the customer never purchased from. The shifted interest is mainly caused by the ever-increasing impact of long-tail phenomenon on the current e-commerce practice, instead of choosing the mainstream products people tend to search for niche products that can better serve their needs, the advance of recommendation systems is considered as a great stimuli of this effect since it reduces the search effort greatly.

Continue reading Hmmm.. They have got that too? Interesting… →