EMC Dell Data Science Foundations - D-DS-FN-23무료 덤프문제 풀어보기
Which process in text analysis can be used to reduce dimensionality?
정답: D
In which phase of the analytic lifecycle would you expect to spend most of the project time?
정답: D
Which data asset is an example of unstructured data?
정답: A
What is an example of a null hypothesis?
정답: C
When building a K-means clustering model, you notice that the clusters did not segment on variables that you expected. What should you do?
정답: D
설명: (Fast2test 회원만 볼 수 있음)
You have scored your Naïve Bayesian Classifier model on "hold out" test data for cross validation. You have determined the way the samples scored and have tabulated them as shown in the exhibit.
What are the Precision and Recall rates of the model?
What are the Precision and Recall rates of the model?
정답: D
When is the GROUP BY ROLLUP clause used in an OLAP query?
정답: D
Refer to the exhibit.
In the exhibit, the x-axis represents the derived probability of a borrower defaulting on a loan. Also in the exhibit, the pink represents borrowers that are known to have not defaulted on their loan, and the blue represents borrowers that are known to have defaulted on their loan.
Which analytical method could produce the probabilities needed to build this exhibit?
In the exhibit, the x-axis represents the derived probability of a borrower defaulting on a loan. Also in the exhibit, the pink represents borrowers that are known to have not defaulted on their loan, and the blue represents borrowers that are known to have defaulted on their loan.
Which analytical method could produce the probabilities needed to build this exhibit?
정답: D
What is a benefit of Spark in-memory data processing as opposed to using MapReduce?
정답: C
설명: (Fast2test 회원만 볼 수 있음)
How is dimensionality defined in a "bag of words" document representation?
정답: A
What are categorized as cluster and workflow management tools for Hadoop?
정답: A
설명: (Fast2test 회원만 볼 수 있음)
How should project results be communicated to executives and the project sponsor?
정답: A
설명: (Fast2test 회원만 볼 수 있음)
The web analytics team uses Hadoop to process access logs. They now want to correlate this data with structured user data residing in their massively parallel database.
Which tool should they use to export the structured data from Hadoop?
Which tool should they use to export the structured data from Hadoop?
정답: A
Refer to the exhibit.
Click on the calculator icon in the upper left corner.
You are given a list of predefined association rules:
A) RENTER => BAD CREDIT
B) RENTER => GOOD CREDIT
C) HOME OWNER => BAD CREDIT
D) HOME OWNER => GOOD CREDIT
E) FREE HOUSING => BAD CREDIT
F) FREE HOUSING => GOOD CREDIT
For your next analysis, you must limit your dataset based on rules with confidence greater than 60%.
Which of the rules will be kept in the analysis?
Click on the calculator icon in the upper left corner.
You are given a list of predefined association rules:
A) RENTER => BAD CREDIT
B) RENTER => GOOD CREDIT
C) HOME OWNER => BAD CREDIT
D) HOME OWNER => GOOD CREDIT
E) FREE HOUSING => BAD CREDIT
F) FREE HOUSING => GOOD CREDIT
For your next analysis, you must limit your dataset based on rules with confidence greater than 60%.
Which of the rules will be kept in the analysis?
정답: C