C1000-059 Online Practice Questions and Answers

DRAG DROP

What is the best step by step order for machine learning pipeline?

Select and Place:

What is the goal of the backpropagation algorithm?

A. to randomize the trajectory of the neural network parameters during training

B. to smooth the gradient of the loss function in order to avoid getting trapped in small local minimas

C. to scale the gradient descent step in proportion to the gradient magnitude

D. to compute the gradient of the loss function with respect to the neural network parameters

What is used to scale large positive values during data cleaning?

A. division by random numbers

B. square

C. logarithm

D. subtract median

What are three operators used by genetic programming? (Choose three.)

A. reciprocation

B. mutation

C. duel

D. selection

E. sheltering

F. crossover

Which fine-tuning technique does not optimize the hyperparameters of a machine learning model?

A. grid search

B. population based training

C. random search

D. hyperband

The least squares optimization technique (The Method of Least Squares) is used in which algorithm?

A. Support Vector Machines

B. Naive Bayes classification

C. Logistic regression

D. Linear regression

What is meant by the curse of dimensionality?

A. The number of available algorithms for a given task is high.

B. The number of available data sources for a given task is high.

C. The data sparsity becomes more severe as the number of features is increased.

D. The data sparsity becomes more severe as the number of samples is increased.

Which two properties hold true for standardized variables (also known as z-score normalization)? (Choose two.)

A. standard deviation = 0.5

B. expected value = 0

C. expected value = 0.5

D. expected value = 1

E. standard deviation = 1

Which is an example of a nominal scale data?

A. a variable industry with categorical values such as financial, engineering, and retail

B. a variable mood with a scale of values unhappy, ok, and happy

C. a variable bank account balance whose possible values are $5, $10, and $15

D. a variable temperature with a scale of values low, medium, and high

Given the following sentence:

The dog jumps over a fence.

What would a vectorized version after common English stopword removal look like?

A. ['dog', 'fence', 'run']

B. ['fence', 'jumps']

C. ['dog', 'fence', 'jumps']

D. ['a', 'dog', 'fence', 'jumps', 'over', 'the']