You should provide the context where you found them if you can, I or someone else might be able to help out more in that case.

"Darwinism" and "Darwinian" aren't really something I would think of as technical terms but are usually used to refer to some form of evolution involving natural selection....so if I were to hazard a guess, I would say that probably what they are talking about is something like a genetic algorithm, so maybe searching for information on that will help.