AI0-001 Machine Learning and Deep Learning Practice Question
Exhibit
Model Evaluation Report: Accuracy: 0.85 Precision: 0.90 Recall: 0.70 F1-score: 0.79 Confusion Matrix: [[850, 100], [150, 350]]
Refer to the exhibit. An AI specialist reviews the model evaluation report for a binary classifier. The specialist wants to improve recall. Which action is most likely effective?
⚠ Common exam trap
This exam often tests the misconception that adjusting the classification threshold is the primary way to improve recall, when in fact data-level strategies like collecting more minority class data are more effective for addressing class imbalance.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Collect more training data for the minority class
Collecting more training data for the minority class directly addresses class imbalance, which is a common cause of low recall. By providing more examples of the positive (minority) class, the model can learn better decision boundaries and reduce false negatives, thereby improving recall without altering the classification threshold.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Decrease the classification threshold
Why it's wrong here
Decreasing threshold increases recall but may also increase false positives; however, the question asks for most likely effective, and data collection is a fundamental approach.
- ✓
Collect more training data for the minority class
Why this is correct
More minority data provides the model with more patterns, often improving recall.
- ✗
Increase the classification threshold
Why it's wrong here
Increasing threshold reduces recall.
- ✗
Add more features
Why it's wrong here
Adding features may help but not as directly as addressing class imbalance.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AI0-001 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AI0-001 exam.