| Question.61 Which metric can you use to evaluate a classification model? A. true positive rate B. mean absolute error (MAE) C. coefficient of determination (R2) D. root mean squared error (RMSE) |
61. Click here to View Answer
Answer: A
What does a good model look like?
An ROC curve that approaches the top left corner with 100% true positive rate and 0% false positive rate will be the best model. A random model would display as a flat line from the bottom left to the top right corner. Worse than random would dip below the y=x line.
Reference:
https://docs.microsoft.com/en-us/azure/machine-learning/how-to-understand-automated-ml#classification
| Question.62 HOTSPOT Select the answer that correctly completes the sentence.  |
62. Click here to View Answer
Answer:
| Question.63 You need to make the written press releases of your company available in a range of languages. Which service should you use? A. Translator B. Text Analytics C. Speech D. Language Understanding (LUIS) |
63. Click here to View Answer
Answer: A
Translator is a cloud-based machine translation service you can use to translate text in near real-time through a simple REST API call. The service uses modern neural machine translation technology and offers statistical machine translation technology. Custom Translator is an extension of Translator, which allows you to build neural translation systems.
Reference:
https://docs.microsoft.com/en-us/azure/cognitive-services/translator/
| Question.64 You are developing a solution that uses the Language service. You need to identify the main talking points in a collection of documents. Which type of natural language processing should you use? A. language detection B. sentiment analysis C. entity recognition D. key phrase extraction |
64. Click here to View Answer
Answer: D
| Question.65 You have a bot that identifies the brand names of products in images of supermarket shelves. Which service does the bot use? A. AI enrichment for Azure Search capabilities B. Computer Vision Image Analysis capabilities C. Custom Vision Image Classification capabilities D. Language Understanding capabilities |
65. Click here to View Answer
Answer: C