Recommendation Systems have long been serving the industry of e-commerce with
recommendations pertaining to movies, books, travel packages et cetera. A user‟s activity or
past history of purchases is used to generate predictions for that user. Youtube‟s video
recommendation system, Amazon‟s “You may also like…” and Pandora‟s music
recommendation system are a few very popular examples. Both explicit and implicit feedbacks
are being utilized to churn out predictions about the likings of a customer to recommend items.
As recommendation systems have evolved, we primarily encounter two types- Content based
and Collaborative Filtering based recommendation systems.
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