[jamesakirk]

Thank you for mentioning J. Nathan Kutz! Reading through this article, I saw similarities to Dynamic Mode Decomposition (I am not literate enough on the topic to elaborate). His Coursera courses and book were a fascinating dive into orthogonal basis functions, lower-rank approximations like PCA... I'm not sharp enough anymore (over a decade since grad school) to fully grok it, but damn his work is so cool!