The Living Thing / Notebooks :

Hidden variables and latent factors

This isn’t a thing per se. But I want a landing page for a few different ways to think about hidden variablesand unobserved states.

If the hidden variables are random, I might think of hierarchical models, latent factors, deep networks, informative sampling, censored data, weak supervision …

If the hidden variables are deterministic I might think of algorithmic complexity.

Random thing: Matrix factorisation to approximate latent factors and their interaction in recommender systems.