arXiv AI

Beyond the Prompt: Recovering Hidden Concepts in Text-to-Image Models

The paper introduces EmbGA, an embedding‑space genetic algorithm designed to uncover hidden concepts in text‑to‑image models that are not explicitly mentioned in prompts. Unlike existing prompt optimizers, EmbGA operates directly in token embedding space, using crossover and mutation to generate valid token sequences that align with unseen visual concepts. Experiments on two benchmarks show that EmbGA outperforms six other optimizers in alignment and token grounding, especially with larger exploration budgets, while also being faster than language‑model‑guided search.

arXiv Computer Vision
3d ago

T-DIG: Text-Conditioned Diversity for Image Generation

T-DIG is a text-conditioned diversity framework that enables users to generate multiple images from a single prompt and then request variations along specific axes—such as background, style, or clothing—using natural language. The system employs an LLM policy to produce K axis-conditioned prompts or edit instructions for a frozen image generator or editor, trained with GRPO and a diversity reward. T‑DIG works with open‑weight, distilled, and proprietary models, and the authors release a new dataset of human‑written axes and real user interactions to benchmark text‑conditioned diversity.

By Simran Khanuja, Rohit Gandikota, Gaurav Parmar, Graham Neubig
arXiv Computation and Language
Aug 28

Visual Information-Guided Parallel Decoding for Diffusion Multimodal Large Language Models

Visual Information-Guided Parallel Decoding for Diffusion Multimodal Large Language Models introduces the VIG‑Sampler, a method that prioritizes tokens for decoding based on their attention to image tokens and penalizes redundancy in image‑attention distributions. The approach aims to improve the quality of multimodal generation by selecting more informative tokens during diffusion decoding. Experiments on seven captioning and VQA benchmarks with three open‑source dMLLMs show that VIG‑Sampler outperforms the Info‑Gain Sampler by an average of 19.3 CIDEr points and achieves better COCO Caption results using only half as many decoding steps.

By Insu Lee, Wooje Park, Wonseok Shin, Jinwoo Son, Byonghyo Shim
arXiv Computer Vision
Sep 3

Diversifying Long Prompt Image Generation through Structured Prompt Embedding Space Sampling

The paper investigates how long, richly detailed prompts cause modern text-to-image models to lose diversity, even when many visual aspects are unspecified. It introduces PromptMoG, a training‑free method that samples prompt embeddings from a Mixture‑of‑Gaussians distribution to restore diversity while preserving semantic fidelity. The authors also present LPD‑Bench, a benchmark for evaluating fidelity and diversity under long, semantically dense prompts, and demonstrate PromptMoG’s effectiveness on four large diffusion models.

By Bo-Kai Ruan, Teng-Fang Hsiao, Ling Lo, Yi-Lun Wu, Hong-Han Shuai
arXiv Computer Vision
6d ago

Agentic Image Generation in the Wild

Agentic Image Generation in the Wild pairs an image generator with a web‑search agent to retrieve references beyond the generator’s training data. The authors introduce the Savanna benchmark, comprising 500 prompts derived from recent headlines that are difficult to resolve due to limited visual evidence and confusing search results. They propose the Locate‑Corroborate‑Isolate paradigm and train Ranger‑8B, which outperforms existing frameworks on both search accuracy and generation quality.

By Yifan Li, Bowen Qin, Kun Zhou, Haochen Zhao, Zikang Liu, Zheng Li, Minsheng Hao, Yuhao Cheng, Haosheng Zou, Jeff Chen, Wayne Xin Zhao
arXiv AI
Aug 28

PailitaoGR: Latent Think-with-Images for Generative Image Retrieval

PailitaoGR is a generative image retrieval model that incorporates a latent think-with-images approach to better handle real‑world query images. It uses a target‑focused perception mechanism—comprising a target enhancer and on‑policy distillation—to highlight the search target, and a selective auxiliary‑evidence mechanism—using an auxiliary enhancer and incremental contrastive distillation—to exploit useful side information. Trained on real‑world online image‑search logs, the method achieves an average 13.8 % improvement over existing baselines.

By Xiaomeng Fan, Yueran Liu, Shengyu Zhou, Chenghan Fu, Wanxian Guan, Feng Li, Chuan Yu, Jian Xu, Bo Zheng
arXiv AI
Aug 12

JEPA-DNA: Grounding Genomic Foundation Models through Joint-Embedding Predictive Architectures

arXiv:2602. 17162v3 Announce Type: replace Abstract: Genomic Foundation Models (GFMs) typically rely on Masked Language Modeling (MLM) or Next-Token Prediction (NTP) to learn the "Laws of Nature".

By Ariel Larey, Elay Dahan, Amit Bleiweiss, Raizy Kellerman, Guy Leib, Omri Nayshool, Dan Ofer, Tal Zinger, Dan Dominissini, Gideon Rechavi, Nicole Bussola, Simon Lee, Shane O'Connell, Dung Hoang, Marissa Wirth, Alexander W. Charney, Nati Daniel, Yoli Shavit
arXiv AI
Sep 2

Guided Prompt Evolution for Vision-Language Models Adaptation

The paper introduces EvoPrompt, a framework for adapting vision‑language models to new tasks with limited data while preventing catastrophic forgetting. EvoPrompt uses a Modality‑Shared Prompt Projector to create hierarchical prompts and an evolutionary training strategy that separates low‑rank updates into directional and magnitude components, preserving learned semantic directions. Experiments show that EvoPrompt achieves state‑of‑the‑art few‑shot performance while maintaining the original zero‑shot capabilities of the pre‑trained models.

By Enming Zhang, Jiayang Li, Yanlong Wang, Yanru Wu, Zhenyu Liu, Yang Li