Which mathematical technique revolutionized retail personalization algorithms by enabling product recommendations based on patterns in customer purchase history?

The retail industry increasingly relies on advanced mathematical algorithms to personalize shopping experiences. These algorithms analyze customer behavior patterns, purchase history, and preferences to create tailored recommendations and marketing strategies. This has revolutionized how retailers interact with customers, moving from broad demographic targeting to individualized approaches. How well do you know the mathematics behind retail personalization?

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Matrix Factorization
Fourier Transforms
Euler's Method
Simplex Algorithm