Creative Evolutionary Systems

18 The Genetic Algorithm As a Discovery Engine: Strange Circuits and New Principles

450

18.7

FIGURE

~:ZO )-Y x2~---~Y x2~ )-Y x,

x3

y= xl+ x 2 y= xiA x 2 y= Xl| 2 y= xi_l, ifc= i

MODSUM MIN TPRODUCT T-GATE

X1 ~ X1

y= x1" x 2 y= x 1 y= x1(~ x z y= xl V x2

MODPRODUCT NOT TSUM MAX

Symbols and analytic representations of two-input multiple-valued logic gates.

approach have been reported in (Kalganova, Miller, and Fogarty 1998;

Kalganova, Miller, and Lipnitskaya 1998). The following logic gates have been

used in circuit evolution: NOT, MIN, MAX, MODSUM, TSUM, TPRODUCT,

and any of these ...