Which mathematical algorithm was revolutionary for retail customer analytics by enabling the clustering of customers into distinct behavioral segments without requiring predefined categories?

In the data-driven world of retail, mathematical models and algorithms power customer analytics platforms. These sophisticated systems help retailers understand customer behavior patterns, predict purchasing trends, and personalize shopping experiences. How well do you know the mathematical foundations behind today's cutting-edge retail customer analytics tools?

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K-means clustering algorithm
Fibonacci sequence application
Euclidean geometry mapping
Bayesian probability networks