Abstract
In this article, it is used virus evolution type Genetic Algorithm searching for a solution by co-evolution of two populations. One of the population is host population to have a solution of the issue of application, virus population to have the partial solution one more. And we confirmed that evolution processes were different by a difference of the infection technique that was genetic operations of a virus. In addition, we report that the result that is better than evolution by independent infection technique was provided by putting different infection technique together.