Beyond Interactive Evolution: Expressing Intentions Through Fitness Functions

Abstract

Photogrowth is a creativity support tool for the creation of nonphotorealistic renderings of images. The authors discuss its evolution from a generative art application to an interactive evolutionary art tool and finally into a meta-level interactive art system in which users express their artistic intentions through the design of a fitness function. The authors explore the impact of these changes on the sense of authorship, highlighting the range of imagery that can be produced by the system.

Evolving Stencils for Typefaces: Combining Machine Learning, User’s Preferences and Novelty

“…(iii) Adopting an approach similar to the one developed by [12,13], allowing the users to design fitness functions through a responsive user interface, thus allowing them to express their design intentions at the metalevel. The user-designed fitness functions are based on features presented by the stencils, namely behavioural features, related to how each stencil performs in drawing glyphs for the target characters, and morphology features, related to the structure and components of each stencil;…”

“…Overall, the experimental results (see Figure 1) show the adequacy of the proposed approach, demonstrating how EC and ML may address challenges in type design and expand the tools for the optimisation of the design process. Additionally, they also show how meta-level interactive evolution [12,13] allows the expression of user intentions and goals without imposing a burden to the user, and how novelty search increases the diversity of feasible solutions.…”