Which retail technology holds the Guinness World Record for 'First Commercial Use of Machine Learning for Product Recommendations' implemented in 1998?

The retail industry has witnessed numerous technological innovations that have set world records and transformed how we shop. From the earliest cash registers to today's AI-powered solutions, many retail technologies have earned their place in the record books. Test your knowledge about a groundbreaking retail technology that changed the industry forever and set a world record in the process.

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• Amazon's item-to-item collaborative filtering algorithm
• eBay's BiddingBuddy predictive auction system
• Walmart's SMART inventory forecasting system
• Barnes & Noble's BookMatcher recommendation engine

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