OP's point (and it's valid) is that the author covers the regularization term but does not explain the task aside from the following throwaway line: > "The goa

OP's point (and it's valid) is that the author covers the regularization term but does not explain the task aside from the following throwaway line: > "The goal is to find the model that minimzes (sp) this loss function." Unless we're overloading the word "model" -- which is only going to confuse your intended audience -- this statement is incorrect. We're actually searching for the parameterization \alpha of the model that minimizes the loss function.