# Overfitting * Leave one out cross validation * Importance sampling (PSIS) * Information Criteria (WAIC) ![](Statistical%20Rethinking%202023%20-%2007%20-%20Fitting%20Over%20&%20Under%2015-34%20screenshot.png) ![](Statistical%20Rethinking%202023%20-%2007%20-%20Fitting%20Over%20&%20Under%2018-33%20screenshot.png) ![](Statistical%20Rethinking%202023%20-%2007%20-%20Fitting%20Over%20&%20Under%2018-56%20screenshot.png) ![](Statistical%20Rethinking%202023%20-%2007%20-%20Fitting%20Over%20&%20Under%2023-8%20screenshot.png) ![](Statistical%20Rethinking%202023%20-%2007%20-%20Fitting%20Over%20&%20Under%2031-48%20screenshot.png) ![](Statistical%20Rethinking%202023%20-%2007%20-%20Fitting%20Over%20&%20Under%2033-10%20screenshot.png) ![](Statistical%20Rethinking%202023%20-%2007%20-%20Fitting%20Over%20&%20Under%2034-26%20screenshot.png) ![](Statistical%20Rethinking%202023%20-%2007%20-%20Fitting%20Over%20&%20Under%2052-55%20screenshot.png) --- Date: 20231017 Links to: Tags: References: * [Statistical Rethinking 2022 Lecture 07 - Overfitting - YouTube](https://www.youtube.com/watch?v=odGAAJDlgp8) * [Statistical Rethinking 2023 - Lecture 07 - Speaker Deck](https://speakerdeck.com/rmcelreath/statistical-rethinking-2023-lecture-07?slide=3)