Which mathematical concept forms the foundation of many retail recommendation engines used by companies like Amazon and Netflix?

The intersection of mathematics and retail data analytics has revolutionized how businesses make decisions. Sophisticated statistical models and algorithms help retailers optimize everything from inventory management to customer targeting. This poll tests your knowledge about a famous mathematical technique that transformed how retailers analyze purchasing patterns and make product recommendations.

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Collaborative filtering matrix factorization
Laplace transformations
Riemann hypothesis applications
Euclidean geometry mapping