Which mathematical concept forms the foundation of Amazon's original recommendation algorithm that helped propel it to e-commerce dominance?

E-commerce platforms rely heavily on mathematical algorithms to function effectively. From recommendation systems to pricing strategies, mathematics is at the core of online retail success. This trivia question explores the mathematical foundations that power one of the world's largest e-commerce platforms. Test your knowledge about the intersection of mathematics and e-commerce!

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Collaborative filtering using matrix factorization
Bayesian probability networks
Neural network deep learning
Monte Carlo simulations