Which pioneering recommendation algorithm, developed in the late 1990s, revolutionized retail personalization and became the foundation for many modern e-commerce recommendation systems?

The retail landscape has been revolutionized by technological innovations that enhance customer experiences. Among these advancements, personalization algorithms represent a significant breakthrough that transformed how retailers understand and respond to consumer preferences. This trivia question explores a key milestone in the development of retail personalization technology that changed the industry forever.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Collaborative Filtering, first implemented at scale by Amazon in 1998
Neural Network Prediction, developed by IBM for retail in 1997
Customer Segmentation Matrix, patented by Walmart in 1999
Behavioral Targeting System, created by eBay in 1996