NPTEL Deep Learning - IIT Ropar Week 3 Assignment Answers 2024

NPTEL Deep Learning – IIT Ropar Week 3 Assignment Answers 2024

1. Choose the correct dimensions of W₁ and a₁

W₁∈R^6×3
W₁∈R^3×6
W₁∈R^1×6
a₁∈R^6×1
a₁∈R^1×6
a₁∈R^1×1

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2. How many learnable parameters(including bias) are there in the network?

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3. Which of the following loss functions can be used for the classification problem?

Means Squared error
Cross entropy
Both Mean Squared Error and Cross Entropy loss can be used

Answer :-

4. We have a multi-classification problem that we decide to solve by training a feedforward neural network. What activation function should we use in the output layer to get the best results?

Logistic
Step function
Softmax
linear

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5. We have data x with the following labels y = [‘car’, ‘bus’, ‘bike’, ‘car’, ‘bus’, ‘car’, ‘bus’, ‘bike’, ‘car’]. Which of the following distribution will give the lowest cross-entropy loss with y? (Distribution is given in the following order [‘car’, ‘bus’,‘bike’])?

[0.49,0.30,0.21]
[0.44,0.33,0.22]
[0.50,0.30,0.20]
[0.44,0.39,0.19]

Answer :-

6. Which of the following statements about backpropagation is true?

It is used to compute the output of a neural network.
It is used to initialize the weights in a neural network.
It is used to optimize the weights in a neural network.
It is used to regularize the weights in a neural network.

Answer :-

7. Given two probability distributions p and q, under what conditions is the cross entropy between them minimized?

All the values in p are lower than corresponding values in q
All the values in p are lower than corresponding values in q
p=0(0 is a vector)
p=q

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8. Given that the probability of Event A occurring is 0.80 and the probability of Event B occurring is 0.20, which of the following statements is correct?