• Select 3 cards at random
• Identify which 2 cards are the most similar?
– What makes them different from the third card?
• Helps to determine the characteristics of our classes
• Picking 3 cards forces us into identifying differences between them
– There will always be two that are “closer” together
– Although which two cards that is may differ depending on your
Sean Bechhofer: Knowledge Elicitation (PDF)