GATE DA topic:computing PYQs & Answers — Page 2

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Questions 11–20 of 195. Imported answers require independent review unless marked reviewed.

Topic practice 195 questionsPage 2 of 20

For a classification problem, Principal Component Analysis (PCA) has been used to reduce the dimensionality of a feature space from 100 to 10.

Which of the following options is true about the angle

between the first and the tenth principal components?

Your answerChoose one option.

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Consider that you are training a classifier for a 10-class classification problem. Each input is represented as a 512-dimensional vector. There are 1000 samples, out of which first 100 will be used for testing. Let Leave-One-Out-Cross-Validation (LOOCV) be used for selection of the classifier model before testing.

Which of the following options is the correct number of validation splits that will be generated?

Your answerChoose one option.

512

900

1000

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Which of the following algorithms is NOT an example of uninformed search?

Your answerChoose one option.

Breadth First Search

Depth First Search

A* Search

Depth-limited Search

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Which of the following statements is NOT true?

(The names of the predicates are intuitive.)

Your answerChoose one option.

“Each king is a person” is equivalent to

“All humans are mortal” is equivalent to

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Consider that the quick sort algorithm is used to sort an array of

distinct randomly ordered elements. In every call, the pivot is chosen as the first element of the current subarray.

Let

denote the expected time to sort the array. Assume that the time to partition is linear in the size of the current subarray.

Which of the following recurrence relations correctly represents

in this scenario?

Your answerChoose one option.

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Consider the given Python program.

def append_to_lst(val, lst=[]):

lst.append(val)

return lst

print(append_to_lst(1))

print(append_to_lst(2))

print(append_to_lst(3, []))

Which of the following is the correct output of this program?

Your answerChoose one option.

[1]

[2]

[3]

[1]

[1, 2]

[3]

[1]

[2]

[1, 2, 3]

[1]

[1, 2]

[1, 3]

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Let

be a relational schema with functional dependency set

Which of the following statements is correct?

Your answerChoose one option.

AD, ED and CD are the only candidate keys of R.

AD and ED are the only candidate keys of R.

A, E and CD are the only candidate keys of R.

A and CD are the only candidate keys of R.

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Consider that the visualization of a 3-dimensional data cube is showing Sales Quantity for each combination of the attributes Product Type, Month and Country.

From this, if we want to further visualize the Sales Quantity for each combination of Product Type, Month and State, which of the following OLAP operations should be performed?

Your answerChoose one option.

Slicing

Dicing

Roll-up

Drill-down

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Let

be a randomly chosen non-empty subset of

Which of the following is the probability that the product of all the elements of

is even?

Your answerChoose one option.

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Suppose that a computer program provides a non-negative and integer-valued random solution to the equation

Which of the following is the probability that all of

in the provided solution are positive?

Your answerChoose one option.

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GATE DA topic:computing PYQs

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