https://www.pedro.ai/blog/2017/02/22/entropy-and-kl-divergence/
Intuitive introduction to what the Kl divergence is, how it behaves, and why its useful
kl divergenceentropy
https://www.overleaf.com/articles/the-dual-of-constrained-kl-divergence-is-the-mle-of-the-log-linear-model/pxxxtxqnvsdw
The dual of constrained KL-Divergence is the MLE of the log-linear model
kl divergencedualconstrainedmle