Which mathematical technique first revolutionized Amazon's product recommendation system in the late 1990s, creating the foundation for 'Customers Who Bought This Also Bought' features?

The intersection of mathematics and retail analytics has transformed how businesses understand customer behavior and optimize operations. Advanced algorithms now power everything from inventory forecasting to personalized recommendations. This poll tests your knowledge about a significant mathematical innovation that revolutionized e-commerce product recommendations and became an industry standard approach.

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Item-to-Item Collaborative Filtering
Bayesian Classification Networks
Random Forest Regression Analysis
K-means Clustering Algorithms