Unraveling principal component analysis

This book collects my writing on principal component analysis. It’s a long-form mathematics book. That means it dives deep into the fundamentals and works out all the relevant details, but it does so in a narrative fashion: it doesn’t just give you a selection of dry and overly brief proofs, it tells a story.

PDF version

Click the cover image above to download the PDF. This version is entirely free and will always be so.

Other versions

Through Amazon, you can order a print-on-demand copy of the book for 26$. (I make a few dollars off this, but most of the cost goes to the printing).
If you have a Kindle, you can buy a specialized version of the book for 3$, (of which about 1$ goes to me). Note that this version is not substantially different from the PDF.

Version, license and sources

I occasionally update the book when issues are found. The changelog can be found on its github page. The current version is v1.1.0. If you have a print copy, you can find the version at the end of the introduction. If it’s not there, you have version v1.0.0.

All figures in the book are licensed CC-BY-SA. The textual content is not currently under an open license. Let me know if there’s something you’d like to use it for.

The source files are available at github.com/pbloem/pca-book.