Simplified Algorithm is a one of parameter estimation methods which used to estimate the parameter of the transfer function
Reference : Adaptive control by Astrom
I tag it for adaptive control and parameter estimation so it's an estimation algorithm
see Astrom reference for adaptive control to know the concept and explanation of these method
IT'S A CODE NOT A BOOK
Simplified algorithm for WHAT? Why not explain what you post? Put in a description? Otherwise this is just wasting server space, as nobody will ever find it or know what it does.