Whose examples shaped the reef classifier?
Build equal-sized collections with different group coverage. Test the same new creature on both.
Compare a new example with group centroids calculated only from teaching rows.
Cut these cards apart. Use the original example first, then let a partner supply a changed case. Keep sealed/final cards with the teacher until the learner commits a rule.
Feature A: 1
Feature B: 2
Group: A
Use to teach: True
My prediction and reason:
Feature A: 2
Feature B: 3
Group: A
Use to teach: True
My prediction and reason:
Feature A: 8
Feature B: 7
Group: B
Use to teach: True
My prediction and reason:
Feature A: 4
Feature B: 4
Group: B
Use to teach: False
My prediction and reason:
A mean can hide subgroups; equal counts do not guarantee representative examples.