Spatial co-evolution in Age Layered Planes (SCALP)

This paper introduces a method of combining Greg Hornby´s Age Layered Protocol System with a form of spatial co-evolution. The combined system (SCALP) is compared to these two systems and a canonical GP tournament selection scheme over three well understood domains, the sextic regression problem, a two variable regression problem and a variation on the classic minesweeper problem. In each case SCALP avoided premature convergence; solving every run of these particular problems.