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Book Overview & Buying
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Table Of Contents
Hands-On Machine Learning with C++ - Second Edition
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In this chapter, we discussed how to estimate an ML model’s performance and what metrics can be used for such estimation. We considered different metrics for regression and classification tasks and what characteristics they have. We also saw how performance metrics can be used to determine the model’s behavior and looked at bias and variance characteristics. We looked at some high bias (underfitting) and high variance (overfitting) problems and considered how to solve them. We also learned about regularization approaches, which are often used to deal with overfitting. We then studied what validation is and how it is used in the cross-validation technique. We saw that the cross-validation technique allows us to estimate model performance while training limited data. In the last section, we combined an evaluation metric and cross-validation in the grid search algorithm, which we can use to select the best set of hyperparameters for our model.
In the next chapter...