Which mathematical algorithm was the foundation of Amazon's original product recommendation system that revolutionized e-commerce personalization?

In today's competitive retail landscape, mathematical algorithms power everything from inventory management to personalized recommendations. This poll tests your knowledge about how mathematical models have revolutionized e-commerce platforms, creating sophisticated systems that analyze customer behavior, optimize pricing strategies, and enhance the overall shopping experience. Do you understand how the numbers work behind your favorite online shopping destinations?

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Item-to-Item Collaborative Filtering
K-means Clustering
Gradient Boosting Decision Trees
Markov Chain Monte Carlo