Question: What is overfitting? Why is it a special problem when working with machine learning (data-adaptive) models? How can we protect against overfitting? Provide a few

What is overfitting? Why is it a special problem when working with machine learning (data-adaptive) models? How can we protect against overfitting? Provide a few lines of Python code that might be used to implement one of these protections.

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=+ Calculated summary quantities are ^ xi 5 384.26, ^ yi 5 3149.04, ^ x 2 i 5 5099.2412, ^ xi yi 5 37,850.7762, and ^ y 2 i 5 309,892.6548.

=+c. What proportion of the observed variation in the compression index can be attributed to the approximate linear relationship between the two variables?

=+d. What proportion of observed variation in removal efficiency can be attributed to the approximate linear relationship?