Module-level Graded Quiz: Softmax Regression :Deep Learning with PyTorch (IBM AI Engineering Professional Certificate) Answers 2025
1. Question 1
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❌ Classifies data into binary classes
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❌ Only works with 2D input
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❌ Converts input to integer classes
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✅ Generalizes logistic regression to handle multiple classes
2. Question 2
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❌ Index of smallest value
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❌ Sum of values
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❌ Average of values
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✅ Index of the largest value
3. Question 3
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❌ Define boundaries of feature space
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✅ Represent the parameters used to classify input samples
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❌ Used to calculate MSE
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❌ Define plotting colors
4. Question 4
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✅ It flattens the input images to 1D vectors
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❌ Uses only subset of pixels
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❌ Adds dimension
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❌ Averages pixels
5. Question 5
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✅ To classify inputs into multiple output classes
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❌ Perform regression
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❌ Optimize the loss
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❌ Two-class only
6. Question 6
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❌ Index of largest value
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❌ Minimum value
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❌ Average
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❌ Index of smallest value
Correct: The question wording:
“What does the max function applied to ‘z’ return?”
💡 max(z) returns the index of the largest value in classification context.
So the correct answer is:
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✅ The index of the largest value in “z”
7. Question 7
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❌ Learning rate
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❌ Training dataset size
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✅ Number of classes in the output
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❌ Number of input features
8. Question 8
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❌ Element-wise multiplication
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❌ Maximum across all samples
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❌ Averaging
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✅ Calculating the dot product for each sample
9. Question 9
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❌ L2 Regularization
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❌ Mean Squared Error
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❌ Hinge Loss
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✅ Cross Entropy Loss
10. Question 10
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❌ Discarded after each epoch
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❌ Remain random
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❌ Converge to zero
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✅ They start resembling the output classes
🧾 Summary Table
| Q# | Correct Answer |
|---|---|
| 1 | Softmax generalizes logistic regression |
| 2 | Argmax returns index of largest value |
| 3 | Weight vectors = classification parameters |
| 4 | MNIST images flattened |
| 5 | Softmax for multi-class classification |
| 6 | Max returns index of largest value |
| 7 | Out size = number of classes |
| 8 | Dot product per sample |
| 9 | Cross-Entropy Loss |
| 10 | Weights resemble output classes |