# 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∈R6×3
• W1∈R3×6
• W1∈R1×6
• a1∈R6×1
• a1∈R1×6
• a1∈R1×1
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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?

• Event A has a low information content
• Event A has a high information content
• Event B has a low information content
• Event B has a high information content
`Answer :- `

9. What is the predicted output for the given input x after doing the forward pass? (Choose the option closest to your answer)

`Answer :- `

10. Compute and enter the loss between the output generated by input x and the true output y

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