Evolutionary systems & genetic algorithms
From GenerativeArt
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* A way to select genotypes based on their scores and then modify or recombine them for expression | * A way to select genotypes based on their scores and then modify or recombine them for expression | ||
* A way to express genotypes to create phenotypes | * A way to express genotypes to create phenotypes | ||
| - | * A way to assign each genotype a score based on an evaluation of the corresponding phenotype | + | * A way to assign each genotype a fitness score based on an evaluation of the corresponding phenotype |
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| + | == Methods for Providing Fitness Scores == | ||
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| + | In various industrial applications fitness can be automatically evaluated using objective measures. For example, competing genetically based investment tools can be evaluated simply by comparing their rate of return on investment. Automated fitness scores in the arts, sometime called Computational Aesthetic Evaluation, is an exceedingly difficult unsolved problem. A viable alternative is for the artist himself to score phenotypical expressions. However, with the artist "in the loop" population sizes and the number of generations is severely limited. | ||
== Types of Genetic Representations == | == Types of Genetic Representations == | ||
| - | There are at least 4 types of genotype representation that can be differentiated based on the mechanisms they use. Each has a different complexification capacity, i.e. some representations lead to more complexity than others. | + | Another significant challenge for evolutionary artists is the design of the genotype. There are at least 4 types of genotype representation that can be differentiated based on the mechanisms they use. Each has a different complexification capacity, i.e. some representations lead to more complexity than others. |
* '''''Fixed Parametric''''' - A genotype that uses a fixed number of parameters that map into phenotypical characteristics in a one-to-one manner. The complexification capacity of this system is highly constrained. | * '''''Fixed Parametric''''' - A genotype that uses a fixed number of parameters that map into phenotypical characteristics in a one-to-one manner. The complexification capacity of this system is highly constrained. | ||
