Cultural Alien Sampler: Open-ended art generation balancing originality and coherence

TL;DR

The paper introduces the Cultural Alien Sampler, a method for art generation that balances originality and coherence by explicitly separating compositional fit from cultural typicality, leading to more diverse and creative outputs.

Contribution

It proposes a novel concept-selection approach using two GPT-2 models to generate culturally alien yet coherent art ideas, enhancing creativity in autonomous agents.

Findings

Outperforms baselines in perceived originality and harmony in human evaluations

Produces more diverse outputs exploring broader conceptual spaces

Achieves performance comparable to human art students in creativity assessments

Abstract

In open-ended domains like art, autonomous agents must generate ideas that are both original and internally coherent, yet current Large Language Models (LLMs) either default to familiar cultural patterns or sacrifice coherence when pushed toward novelty. We address this by introducing the Cultural Alien Sampler (CAS), a concept-selection method that explicitly separates compositional fit from cultural typicality. CAS uses two GPT-2 models fine-tuned on WikiArt concepts: a Concept Coherence Model that scores whether concepts plausibly co-occur within artworks, and a Cultural Context Model that estimates how typical those combinations are within individual artists' bodies of work. CAS targets combinations that are high in coherence and low in typicality, yielding ideas that maintain internal consistency while deviating from learned conventions and embedded cultural context. In a human evaluation (N = 100), our approach outperforms random selection and GPT-4o baselines and achieves performance comparable to human art students in both perceived originality and harmony. Additionally, a quantitative study shows that our method produces more diverse outputs and explores a broader conceptual space than its GPT-4o counterpart, demonstrating that artificial cultural alienness can unlock creative potential in autonomous agents.