Which algorithm technique revolutionized retail personalization by enabling Amazon's famous 'customers who bought this also bought' recommendation system?

In today's competitive retail landscape, personalization algorithms have transformed how businesses connect with customers. These sophisticated AI systems analyze vast datasets to predict consumer preferences and deliver tailored experiences. But how well do you understand the technology powering modern retail personalization? Test your knowledge about the algorithms that are reshaping the retail industry and creating the hyper-personalized shopping experiences we now take for granted.

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Collaborative Filtering
K-means Clustering
Natural Language Processing (NLP)
Random Forest Classification