Which mathematical technique revolutionized retail analytics by enabling the famous 'customers who bought X also bought Y' recommendation systems?

In today's data-driven retail environment, mathematics plays a crucial role in analyzing customer behavior and optimizing sales strategies. Advanced algorithms and statistical models help retailers make informed decisions about inventory, pricing, and marketing. This poll tests your knowledge about how mathematical retail analytics are transforming the industry through innovative applications of data science principles.

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Matrix factorization and collaborative filtering algorithms
Bayesian probability networks
Markov chain Monte Carlo simulations
Fourier transform analysis