Recall
Domain: NLP Fundamentals
🎯 Motivation
Of all the actual positive items, how many the model found. Measures completeness.
📋 Concrete Example
There are 15 real spam emails. Model finds 8. Recall = 8/15 = 0.53. It missed 7.
🔗 Analogy
Like a search and rescue team - of all the lost hikers, how many did they find.