> For the complete documentation index, see [llms.txt](https://cedrickchee.gitbook.io/knowledge/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cedrickchee.gitbook.io/knowledge/courses/fast.ai/machine-learning-intro-to-machine-learning-for-coders/2017-edition/lesson-5-train-vs-test.md).

# Lesson 5 - Train vs Test

*These are my personal notes from fast.ai machine learning course and will continue to be updated and improved if I find anything useful and relevant while I continue to review the course to study much more in-depth. Thanks for reading and happy learning!*

## Topics

* Confidence based on tree variance

## Lesson Resources

* [Video](https://youtu.be/0v93qHDqq_g)
* Jupyter Notebook and code
  * [lesson2-rf\_interpretation.ipynb](https://nbviewer.jupyter.org/github/fastai/fastai/blob/master/courses/ml1/lesson2-rf_interpretation.ipynb)
* Dataset
  * [Blue Book for Bulldozers Kaggle competition](https://www.kaggle.com/c/bluebook-for-bulldozers)

## My Notes