Which mathematical technique is most commonly used by major e-commerce platforms to power their product recommendation systems?

E-commerce platforms increasingly rely on advanced mathematical algorithms to maximize sales and improve user experience. From recommendation engines to inventory optimization, mathematics plays a crucial role in modern online retail. This poll tests your knowledge of how mathematical concepts are applied in the e-commerce industry to drive business decisions and enhance customer satisfaction.

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Collaborative filtering using matrix factorization
Euclidean distance calculations in geometric algebra
Bayesian inference with Markov chain modeling
Fibonacci sequence optimization algorithms