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ml-recall

#adaboost

7 questions from Decision Trees & Ensembles

Timed test

7 questions · 7 min · score and explanations at the end

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Question 1: Single choice

mediumAI-checkedDecision Trees & Ensembles

Boosting runs on 10 training points with these weak classifiers, each listed with the points it misclassifies:

classifier A B C D E G
misclassified 2, 3, 4, 5 1, 6, 7, 9 3, 4, 5, 8 1, 2, 4, 5, 6, 7, 8 3, 10 8, 9, 10

Weights start at 1/101/10. Each round picks the classifier with the smallest weighted error ε\varepsilon (ties go to the earlier letter); then the misclassified points are rescaled to total weight 1/21/2 and the correct ones to total weight 1/21/2. Which classifier is picked in round 2?

Choose one option