Instruction: Describe the basic algorithm behind decision trees.
Context: This question tests the candidate's understanding of decision trees, a popular machine learning algorithm.
Official answer available
Preview the opening of the answer, then unlock the full walkthrough.
The way I'd approach it in an interview is this: A decision tree works by recursively splitting the data into smaller groups based on feature thresholds that improve purity or reduce error. At each split, the tree chooses the feature and condition that best...