Smooth, natural-looking randomness, devised by Ken Perlin after working on the film Tron (1982) and published in 1985. Generative artists use it for textures, terrain and flowing lines.
Consider the 'Perlin Noise' algorithm as a canonical example. This noise algorithm was produced by Ken Perlin for the film Tron and has thereafter been a mainstay of the computational arts.
AA Cavia, AA Cavia on Summoning Worlds
I don't use many classic algorithms. Of course, I use Perlin noise a lot, like these very basic things. On top of that, I write a lot of weird combinations of instructions.
Kim Asendorf, Kim Asendorf on Elegant Symbiosis