https://www.amazon.com/Pattern-Recognition-Learning-Information-Statistics/dp/0387310738
The book has a brief description of hyperparameter fitting using type 2 max likelihood at the start of section 3.5, pages 165-166
https://www.amazon.com/Pattern-Recognition-Learning-Information-Statistics/dp/0387310738
The book has a brief description of hyperparameter fitting using type 2 max likelihood at the start of section 3.5, pages 165-166