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Visual generation models have made remarkable progress in creating realistic images from text prompts, yet struggle with complex prompts that specify multiple objects with precise spatial relationships and attributes. Effective handling of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Chengqi Duan , Rongyao Fang , Yuqing Wang , Kun Wang , Linjiang Huang , Xingyu Zeng , Hongsheng Li , Xihui Liu

A unified diffusion framework for multi-modal generation and understanding has the transformative potential to achieve seamless and controllable image diffusion and other cross-modal tasks. In this paper, we introduce MMGen, a unified…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Jiepeng Wang , Zhaoqing Wang , Hao Pan , Yuan Liu , Dongdong Yu , Changhu Wang , Wenping Wang

Multimodal text-to-image generation remains constrained by the difficulty of maintaining semantic alignment and professional-level detail across diverse visual domains. We propose a multi-agent reinforcement learning framework that…

Artificial Intelligence · Computer Science 2025-10-14 Jiabao Shi , Minfeng Qi , Lefeng Zhang , Di Wang , Yingjie Zhao , Ziying Li , Yalong Xing , Ningran Li

In recent times, Vision-Language Models (VLMs) have been trained under two predominant paradigms. Generative training has enabled Multimodal Large Language Models (MLLMs) to tackle various complex tasks, yet issues such as hallucinations…

Computer Vision and Pattern Recognition · Computer Science 2024-11-04 Wei Chow , Juncheng Li , Qifan Yu , Kaihang Pan , Hao Fei , Zhiqi Ge , Shuai Yang , Siliang Tang , Hanwang Zhang , Qianru Sun

The effectiveness of Multimodal Large Language Models (MLLMs) demonstrates a profound capability in multimodal understanding. However, the simultaneous generation of images with coherent texts is still underdeveloped. Addressing this, we…

Computer Vision and Pattern Recognition · Computer Science 2025-12-10 Kaizhi Zheng , Xuehai He , Xin Eric Wang

Reinforcement learning (RL) has emerged as a promising paradigm for enhancing image editing and text-to-image (T2I) generation. However, current reward models, which act as critics during RL, often suffer from hallucinations and assign…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Xiangyu Zhao , Peiyuan Zhang , Junming Lin , Tianhao Liang , Yuchen Duan , Shengyuan Ding , Changyao Tian , Yuhang Zang , Junchi Yan , Xue Yang

Large decoder-only language models (LLMs) have achieved remarkable success in generation and reasoning tasks, where they generate text responses given instructions. However, many applications, e.g., retrieval augmented generation (RAG),…

Computation and Language · Computer Science 2025-06-06 Caojin Zhang , Qiang Zhang , Ke Li , Sai Vidyaranya Nuthalapati , Benyu Zhang , Jason Liu , Serena Li , Lizhu Zhang , Xiangjun Fan

Reward models are critical for reinforcement learning from human feedback, as they determine the alignment quality and reliability of generative models. For complex tasks such as image editing, reward models are required to capture global…

Large Language Models (LLMs) have shown strong capabilities through two complementary paradigms: Retrieval-Augmented Generation (RAG) for knowledge grounding and Reinforcement Learning from Verifiable Rewards (RLVR) for complex reasoning.…

Computation and Language · Computer Science 2026-04-27 Weitao Li , Boran Xiang , Xiaolong Wang , Zhinan Gou , Weizhi Ma , Yang Liu

This study analyzes the performance of domain-specific Large Language Models (LLMs) for the medical field by integrating Retrieval-Augmented Generation (RAG) systems within a federated learning framework. Leveraging the inherent advantages…

Computation and Language · Computer Science 2025-01-09 Jincheol Jung , Hongju Jeong , Eui-Nam Huh

Multi-dimensional evaluation is the dominant paradigm for human evaluation in Natural Language Generation (NLG), i.e., evaluating the generated text from multiple explainable dimensions, such as coherence and fluency. However, automatic…

Computation and Language · Computer Science 2022-10-14 Ming Zhong , Yang Liu , Da Yin , Yuning Mao , Yizhu Jiao , Pengfei Liu , Chenguang Zhu , Heng Ji , Jiawei Han

Techniques that learn improved representations via offline data or self-supervised objectives have shown impressive results in traditional reinforcement learning (RL). Nevertheless, it is unclear how improved representation learning can…

Computation and Language · Computer Science 2024-10-25 Vaskar Nath , Dylan Slack , Jeff Da , Yuntao Ma , Hugh Zhang , Spencer Whitehead , Sean Hendryx

Low-Altitude Economic Networking (LAENet) aims to support diverse flying applications below 1,000 meters by deploying various aerial vehicles for flexible and cost-effective aerial networking. However, complex decision-making, resource…

Artificial Intelligence · Computer Science 2025-05-28 Lingyi Cai , Ruichen Zhang , Changyuan Zhao , Yu Zhang , Jiawen Kang , Dusit Niyato , Tao Jiang , Xuemin Shen

Text-to-Image (T2I) diffusion models have shown impressive results in generating visually compelling images following user prompts. Building on this, various methods further fine-tune the pre-trained T2I model for specific tasks. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-24 Tsu-Jui Fu , Yusu Qian , Chen Chen , Wenze Hu , Zhe Gan , Yinfei Yang

Diffusion models have exhibited substantial success in text-to-image generation. However, they often encounter challenges when dealing with complex and dense prompts involving multiple objects, attribute binding, and long descriptions. In…

Computer Vision and Pattern Recognition · Computer Science 2024-08-28 Mushui Liu , Yuhang Ma , Yang Zhen , Jun Dan , Yunlong Yu , Zeng Zhao , Zhipeng Hu , Bai Liu , Changjie Fan

Unified multimodal large language models (U-MLLMs) have demonstrated impressive performance in visual understanding and generation in an end-to-end pipeline. Compared with generation-only models (e.g., Stable Diffusion), U-MLLMs may raise…

Computation and Language · Computer Science 2025-02-06 Ming Liu , Hao Chen , Jindong Wang , Liwen Wang , Bhiksha Raj Ramakrishnan , Wensheng Zhang

Multimodal Large Language Models (MLLMs) have demonstrated remarkable capabilities in processing and generating content across multiple data modalities. However, a significant drawback of MLLMs is their reliance on static training data,…

Artificial Intelligence · Computer Science 2024-09-26 Zhanpeng Chen , Chengjin Xu , Yiyan Qi , Jian Guo

Retrieval-Augmented Generation (RAG) integrates non-parametric knowledge into Large Language Models (LLMs), typically from unstructured texts and structured graphs. While recent progress has advanced text-based RAG to multi-turn reasoning…

Computation and Language · Computer Science 2025-12-11 Yucan Guo , Miao Su , Saiping Guan , Zihao Sun , Xiaolong Jin , Jiafeng Guo , Xueqi Cheng

Medical report generation aims to automatically produce radiology-style reports from medical images, supporting efficient and accurate clinical decision-making.However, existing approaches predominately rely on token-level likelihood…

Computation and Language · Computer Science 2026-03-30 Pengyu Wang , Shuchang Ye , Usman Naseem , Jinman Kim

We introduce UniReal, a unified framework designed to address various image generation and editing tasks. Existing solutions often vary by tasks, yet share fundamental principles: preserving consistency between inputs and outputs while…

Computer Vision and Pattern Recognition · Computer Science 2024-12-13 Xi Chen , Zhifei Zhang , He Zhang , Yuqian Zhou , Soo Ye Kim , Qing Liu , Yijun Li , Jianming Zhang , Nanxuan Zhao , Yilin Wang , Hui Ding , Zhe Lin , Hengshuang Zhao