Which pioneering machine learning technique did Netflix implement in 2006 that fundamentally changed content recommendation in the streaming industry?

Machine learning has revolutionized how streaming platforms recommend content to viewers. Behind those 'recommended for you' sections lies sophisticated AI technology that analyzes viewing patterns and predicts what you might enjoy next. This trivia question tests your knowledge about how major streaming services leverage machine learning algorithms to enhance their user experience and keep viewers engaged longer.

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The Netflix Prize competition, offering $1 million to improve their recommendation algorithm
The ViewPath Protocol, which tracked users' cursor movements across the screen
The Cinematic Genome Project, cataloging 27,000 micro-attributes in all films
The Binge Prediction Index, which optimized episode cliffhangers using viewer data