Which mathematical modeling approach led to Amazon's famous recommendation engine that reportedly generates up to 35% of their revenue?

Retail analytics has transformed how stores make decisions, with mathematical models driving everything from inventory management to personalized marketing. In recent years, one particular mathematical advancement has revolutionized how retailers predict consumer behavior and optimize their operations. Test your knowledge about this significant retail technology breakthrough that uses sophisticated mathematical principles.

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Collaborative Filtering Matrix Factorization
Bayesian Network Analysis
Monte Carlo Markov Chain Simulation
Gradient Boosted Decision Trees