Google Cloud Professional Machine Learning Engineer — Question 90

You work for a magazine distributor and need to build a model that predicts which customers will renew their subscriptions for the upcoming year. Using your company’s historical data as your training set, you created a TensorFlow model and deployed it to AI Platform. You need to determine which customer attribute has the most predictive power for each prediction served by the model. What should you do?

Answer options

• A. Use AI Platform notebooks to perform a Lasso regression analysis on your model, which will eliminate features that do not provide a strong signal.
• B. Stream prediction results to BigQuery. Use BigQuery’s CORR(X1, X2) function to calculate the Pearson correlation coefficient between each feature and the target variable.
• C. Use the AI Explanations feature on AI Platform. Submit each prediction request with the ‘explain’ keyword to retrieve feature attributions using the sampled Shapley method.
• D. Use the What-If tool in Google Cloud to determine how your model will perform when individual features are excluded. Rank the feature importance in order of those that caused the most significant performance drop when removed from the model.

Correct answer: C

Explanation

The correct answer is C because the AI Explanations feature on AI Platform provides insights into feature attributions using the sampled Shapley method, helping to identify the most impactful attributes. Options A and B are focused on different analysis techniques that do not provide direct insights for each prediction, while D assesses performance changes rather than determining specific feature attributions.