Unsupervised Learning
Domain: AI Fundamentals
🎯 Motivation
Sometimes data has no labels. We still want to find hidden structure or groups.
📋 Concrete Example
Give a shop customer purchase data with no labels. The algorithm groups customers into clusters (e.g. bargain hunters vs big spenders).
🔗 Analogy
Like sorting a big pile of mixed Lego bricks into piles by shape and color without anyone telling you the categories first.