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Valid D-DS-FN-23 Test Pattern | Exam D-DS-FN-23 Vce Format

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EMC Dell Data Science Foundations Sample Questions (Q125-Q130):

NEW QUESTION # 125
In the Map Reduce framework, what is the purpose of the Map Function?

A. It processes the input and generates key-value pairs
B. It collects the output of the Reduce function
C. It breaks the input into smaller components and distributes to other nodes in the cluster
D. It sorts the results of the Reduce function

Answer: A

NEW QUESTION # 126
In R, functions like plot() and hist() are known as what?

A. generic methods
B. generic functions
C. virtual functions
D. virtual methods

Answer: D

NEW QUESTION # 127
A data scientist is asked to implement an article recommendation feature for an online magazine. The magazine does not want to use client tracking technologies such as cookies or reading history.
Therefore, only the style and subject matter of the current article is available for making recommendations.
All of the magazine's articles are stored in a database in a format suitable for analytics.
Which method should the data scientist try first?

A. K Means Clustering
B. Association Rules
C. Naive Bayesian
D. Logistic Regression

Answer: A

NEW QUESTION # 128
The R vector "v" contains 16 elements.
Which R command modifies the vector to have the same elements in reverse order?

A. v[16:1] <- v[16:1]
B. v[1,16] <- v[16:1]
C. v <- v[16:1]
D. v <- v[16, 1]

Answer: C

NEW QUESTION # 129
Which assumption makes the Naïve Bayesian classifier different from the general Bayesian model?

A. Features of a class are conditionally independent of one another
B. Fewer features can be used with the Naïve Bayes classifier
C. All variables need to be numeric
D. Number of features cannot be greater than the number of records

Answer: A

NEW QUESTION # 130
......

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