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Oracle Cloud Infrastructure Data Science 2022 Professional Sample Questions (Q40-Q45):

NEW QUESTION # 40
The feature type TechJob has the following registered validators: Tech-Job.validator.register(name='istechjob', handler=istechjobdefaulthandler) Tech-Job.validator.register(name='istechjob', handler= istechjobopenhandler, condi-tion=('jobfamily',)) TechJob.validator.register(name='istechjob', handler= istechjobclosedhandler, condition=('jobfamily': 'IT')) When you run istechjob(job_family='Engineering'), what does the feature type validator system do?

• A. Execute the istechjobclosedhandler handler.
• B. Execute the istechjobopenhandler handler.
• C. Execute the istechjobdefaulthandler sales handler.
• D. Throw an error because the system cannot determine which handler to run.

Answer: D
NEW QUESTION # 41
As a data scientist, you are working on a global health data set that has data from more than 50 countries. You want to encode three features, such as 'countries', 'race', and 'body organ' as categories. Which option would you use to encode the categorical feature?

• A. DataFramLabelEncode()
• B. OneHotEncoder()
• C. auto_transform()
• D. showinnotebook()

Answer: A
NEW QUESTION # 42
You have received machine learning model training code, without clear information about the optimal shape to run the training on. How would you proceed to identify the optimal compute shape for your model training that provides a balanced cost and processing time?

• A. Start with a smaller shape and monitor the Job Run metrics and time required to complete the model training: If the compute shape is not fully utilized, tune the model parameters, and rerun the job. Repeat the process until the shape resources are fully utilized.
• B. Start with a smaller shape and monitor the utilization metrics and time required to complete the model training. If the compute shape is fully utilized, change to compute that has more resources and re-run the job. Repeat the process until the processing time does not improve.
• C. Start with the strangest compute shape Jobs support and monitor the Job Run metrics and time required to complete the model training. Tune the model so that it utilizes as much compute resources as possible, even at an increased cost.
• D. Start with a random compute shape and monitor the utilization metrics and time required to finish the model training Perform model training optimizations and performance tests in advance to identify the right compute shape before running the model training as a job.

Answer: B
NEW QUESTION # 43
You trained a model to predict housing prices for your city. Which two metrics from the Ac-celerated Data Science (ADS) Evaluation class can be used to evaluate the regression model you just trained?

• A. Weighted Precision
• B. F-1 Score
• C. Weighted Recall
• D. Mean Absolute Error
• E. Explained Variance Score

Answer: D,E
NEW QUESTION # 44
You want to make your model more parsimonious to reduce the cost of collecting and processing dat a. You plan to do this by removing features that are highly correlated. You would like to create a heat map that displays the correlation so that you can identify candidate features to remove. Which Accelerated Data Science (ADS) SDK method would be appropriate to display the correlation between Continuous and Categorical features?

• A. Corr{}
• B. Pearson_plot{}
• C. Cramersv_plot{}
• D. Correlationratioplot{}

Answer: D
NEW QUESTION # 45
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