> For the complete documentation index, see [llms.txt](https://joyous-x.gitbook.io/mbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://joyous-x.gitbook.io/mbook/part-bigdata/catalog.md).

# 目录

* [PCA原理推导](https://github.com/joyous-x/mbook/tree/77581f1ccf5aa179f39d91f3331d1dae3a392c4a/bigdata/derivation_of_PCA.md)