Which pioneering recommendation algorithm, invented in the 1990s, revolutionized e-commerce by introducing item-to-item collaborative filtering that Amazon later adopted and patented?

The e-commerce landscape was forever transformed when certain recommendation algorithms were invented, leading to the personalized shopping experiences we know today. These AI-driven systems analyze customer behavior patterns to predict and suggest products, revolutionizing how we discover items online. Test your knowledge about this pivotal technological breakthrough that powers the world's largest online retailers.

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Slope One Algorithm
Matrix Factorization
Item-Based Collaborative Filtering
Content-Based Filtering System