Which mathematical model was first successfully implemented by the retail giant Target to predict customer pregnancy for targeted marketing, causing controversy in 2012?

Mathematical tools have revolutionized how retailers analyze customer behavior and optimize product offerings. From predictive analytics to complex algorithms that power recommendation engines, mathematics is at the core of modern retail analytics. This poll tests your knowledge of how mathematical innovations have transformed the retail analytics landscape and influenced product strategy in recent years.

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Markov Chain Monte Carlo (MCMC) predictive modeling
Regression-based purchase pattern analysis with conditional probability filters
Neural network deep learning customer journey mapping
Bayesian inference clustering with demographic weighting