Further Exploration of Necrotic Control of Evolved Art

This study is the second in investigating the use of necrosis based filtration as a method of steering evolutionary algorithms to create evolved art. We use a technique inspired by the danger theory of immune system activation - a method employed in Artificial Immune Systems. An earlier study tested two types of filters used to augment the evolution of apoptotic cellular automata, shape and state diversity, applying one as a soft filter and the other as a crisp filter. This study tests both shape and state diversity filters in both soft and crisp modes and also mixes the filters, applying two filters in a single evolutionary algorithm. Soft and crisp version of the same filter are found to have substantially different behavior. The stacking of filters is found to work simply and transparently, effectively excluding undesirable parts of the fitness landscape.