Which mathematical algorithm, developed in 1994, became the foundation for Amazon's recommendation engine and revolutionized retail big data analytics?

The retail industry has been transformed by mathematical algorithms and big data analytics. Modern retailers use sophisticated mathematical models to analyze customer behavior, optimize inventory, and personalize marketing. This poll tests your knowledge about a groundbreaking mathematical innovation that revolutionized retail data analytics and how it fundamentally changed the industry's approach to customer insights.

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Collaborative Filtering
Neural Networks
Random Forest
K-means Clustering