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Big Data Analytics with Java by Rajat Mehta

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Chapter 9. Recommendation Systems

When you go to a bookstore to buy books, you have a particular book in mind generally, which you are interested in buying and you look for that particular book in the bookshelves. Usually, in the book store, the top selling books at that point in time are kept upfront and the remaining inventory is kept on the shelves arranged (sorted). A typical small bookstore can have say a few thousand books or maybe more. So, in short, the limit to which the physical products are available is right in front of you as a customer and you can pick and choose what you like at that moment. Also, physical stores keep top products in front as they are more sellable, but there is no way the products can be arranged according to the ...

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