Sorry, no definitions found. Check out and contribute to the discussion of this word!
Sorry, no etymologies found.
Moreover, whilst Schmidt and Lipson are able to pre-specify what the state variables of their systems are - they direct their software to look at positions, velocities and accelerations - in the case of cliodynamics, a central difficulty is identifying what the state variables actually are.
As an aside, if it is true that civilization is a non-linear classical physical system, then Schmidt and Lipson's algorithm could perhaps be applied to the data generated by human history, to discover the fundamental laws of cliodynamics.