Which mathematical technique is most commonly used by retail AI systems to identify customer purchasing patterns and create personalized product recommendations?

Artificial intelligence has revolutionized retail analytics and customer experiences. Behind these AI systems are sophisticated mathematical algorithms that process vast amounts of data to generate actionable insights. This trivia question explores how mathematical concepts are applied in modern retail AI solutions that are transforming how stores understand customer behavior and make strategic decisions.

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Collaborative filtering using matrix factorization and nearest neighbor algorithms
Euclidean geometry and trigonometric functions for spatial mapping
Differential calculus to calculate rates of inventory change
Boolean algebra for binary decision-making in checkout systems