Which recommendation algorithm innovation led Netflix to commission 'House of Cards' without a pilot, changing how studios approach content creation?

The film and television industry has been revolutionized by streaming platforms and their technological innovations. One particular recommendation system breakthrough dramatically changed how viewers discover content and how studios approach production decisions. Test your knowledge of this pivotal industry development that transformed viewing habits worldwide.

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Collaborative Filtering System that identified viewers who enjoyed political dramas and Kevin Spacey films
Content-Based Filtering that analyzed visual elements common in successful dramas
Neural Network Analysis that predicted viewer retention rates based on director filmography
Demographic Clustering that identified an underserved market segment for political content