Exams / CLF-C02 / AI, machine learning and analytics / Question 2
CLF-C02 practice question: AI, machine learning and analytics (2 of 3)
Cloud Technology and Services A free question from our original CLF-C02 practice exam. Try it, then open the answer to see why each option is right or wrong.
A retailer receives thousands of written product reviews each day. It wants to identify automatically whether each review is positive, negative, neutral or mixed, without building its own machine learning model. Which service should it use?
Choose one answer.
- AA. Amazon Polly
- BB. Amazon Textract
- CC. Amazon Comprehend
- DD. Amazon SageMaker AI
Show the answer and explanation
Answer: C
- A. Wrong: Polly converts text to speech. It does not judge the sentiment of text.
- B. Wrong: Textract extracts text and data from scanned documents. It does not analyse the meaning or sentiment of the text.
- C. Right: Correct. Comprehend is a natural language processing service that detects sentiment, entities and key phrases using a pre-trained model.
- D. Wrong: SageMaker AI is a platform for building, training and deploying your own models, which the retailer wants to avoid.
Explanation
Amazon Comprehend uses natural language processing to find insights in text, including the dominant sentiment (positive, negative, neutral or mixed), entities and key phrases. It uses pre-trained models, so no machine learning expertise or training data is needed for this kind of task.
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