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Question 5 Machine Learning [ 1 2 Marks ] With regards to regression, describe how overfitting occurs and why it is problem - atic. Describe

Question 5
Machine Learning
[12 Marks]
With regards to regression, describe how overfitting occurs and why it is problem-
atic.
Describe the basic idea behind k-fold cross validation.
How does a decision tree learning algorithm decide which attribute to test next?
2
Describe how the bandwidth parameter in kernel density estimation relates to over-
fitting and underfitting.
Describe how autoencoders can be pretrained for downstream classification tasks.
2
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