Which mathematical concept revolutionized online retail product recommendations, leading to a reported 35% increase in cross-selling effectiveness?

Mathematics plays a crucial role in product innovation across industries. From optimization algorithms determining the best product features to statistical analyses guiding market research, mathematical principles underpin successful product development strategies. This poll tests your knowledge about how mathematical concepts have revolutionized product innovation in recent years.

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Collaborative filtering algorithms using matrix factorization
Bayesian probability networks
Euclidean distance clustering
Monte Carlo simulations