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Deep Learning, Quiz 1

January 2025 term, 23 Feb 2025, Set QDB2

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Question 1

+3−0Single correct

Which of the following statements correctly distinguishes between Momentum Optimizer and Nesterov Accelerated Momentum (NAG) Optimizer?

Select one option

A.
Momentum uses the current gradient to update the velocity, while NAG uses a lookahead gradient based on a tentative future position.
B.
Momentum is computationally faster than NAG because it skips calculating the gradient at a lookahead position.
C.
NAG is a variant of momentum that adjusts the step size dynamically during training.
D.
Momentum uses an adaptive learning rate, whereas NAG uses a fixed learning rate.

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Which of the following statements correctly distinguishes between Momentum Optimizer and Nesterov Accelerated Momentum (NAG) Optimizer? Which of the functions given below has the steepest slope at the point *x* = 1? Figure from the original question paper