Discovering Divergent Representations between Text-to-Image Models

Fuente: arXiv
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Auteurs principaux: Dunlap, Lisa, Gonzalez, Joseph E., Darrell, Trevor, Heilbron, Fabian Caba, Sivic, Josef, Russell, Bryan
Format: Preprint
Publié: 2025
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author Dunlap, Lisa
Gonzalez, Joseph E.
Darrell, Trevor
Heilbron, Fabian Caba
Sivic, Josef
Russell, Bryan
author_facet Dunlap, Lisa
Gonzalez, Joseph E.
Darrell, Trevor
Heilbron, Fabian Caba
Sivic, Josef
Russell, Bryan
contents In this paper, we investigate when and how visual representations learned by two different generative models diverge. Given two text-to-image models, our goal is to discover visual attributes that appear in images generated by one model but not the other, along with the types of prompts that trigger these attribute differences. For example, "flames" might appear in one model's outputs when given prompts expressing strong emotions, while the other model does not produce this attribute given the same prompts. We introduce CompCon (Comparing Concepts), an evolutionary search algorithm that discovers visual attributes more prevalent in one model's output than the other, and uncovers the prompt concepts linked to these visual differences. To evaluate CompCon's ability to find diverging representations, we create an automated data generation pipeline to produce ID2, a dataset of 60 input-dependent differences, and compare our approach to several LLM- and VLM-powered baselines. Finally, we use CompCon to compare popular text-to-image models, finding divergent representations such as how PixArt depicts prompts mentioning loneliness with wet streets and Stable Diffusion 3.5 depicts African American people in media professions. Code at: https://github.com/adobe-research/CompCon
format Preprint
id arxiv_https___arxiv_org_abs_2509_08940
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Discovering Divergent Representations between Text-to-Image Models
Dunlap, Lisa
Gonzalez, Joseph E.
Darrell, Trevor
Heilbron, Fabian Caba
Sivic, Josef
Russell, Bryan
Computer Vision and Pattern Recognition
In this paper, we investigate when and how visual representations learned by two different generative models diverge. Given two text-to-image models, our goal is to discover visual attributes that appear in images generated by one model but not the other, along with the types of prompts that trigger these attribute differences. For example, "flames" might appear in one model's outputs when given prompts expressing strong emotions, while the other model does not produce this attribute given the same prompts. We introduce CompCon (Comparing Concepts), an evolutionary search algorithm that discovers visual attributes more prevalent in one model's output than the other, and uncovers the prompt concepts linked to these visual differences. To evaluate CompCon's ability to find diverging representations, we create an automated data generation pipeline to produce ID2, a dataset of 60 input-dependent differences, and compare our approach to several LLM- and VLM-powered baselines. Finally, we use CompCon to compare popular text-to-image models, finding divergent representations such as how PixArt depicts prompts mentioning loneliness with wet streets and Stable Diffusion 3.5 depicts African American people in media professions. Code at: https://github.com/adobe-research/CompCon
title Discovering Divergent Representations between Text-to-Image Models
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2509.08940