Recommendation Algorithm facts

While investigating facts about Recommendation Algorithm Python and Recommendation Algorithm Example, I found out little known, but curios details like:

Netflix had a $1 million prize to see if anybody could create a better recommendation algorithm their own

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Netflix paid $1MM for a crowdsourced recommendation algorithm, then never implemented it because streaming was killing its DVD business and changed how people choose movies

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what recommendation algorithm does netflix use?

Recommendation Algorithm data charts

For your convenience take a look at Recommendation Algorithm figures with stats and charts presented as graphic.