Which mathematical concept revolutionized Amazon's product recommendation system, reportedly increasing their sales by 29% when first implemented?

In the intersection of mathematics and retail marketing lies a fascinating world of algorithms, predictive models, and data-driven strategies. One particular mathematical concept revolutionized how certain e-commerce platforms optimize their product recommendations and personalization systems. This innovation dramatically increased conversion rates and transformed how mathematical models are applied in the retail space. Test your knowledge about this groundbreaking application of mathematics in modern retail technology.

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Collaborative Filtering Matrix Factorization
Bayesian Neural Networks
Markov Decision Processes
Random Forest Classification