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Related papers: POPEN: Preference-Based Optimization and Ensemble …

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Recently, preference optimization methods such as DPO have significantly enhanced large language models (LLMs) in wide tasks including dialogue and question-answering. However, current methods fail to account for the varying difficulty…

Computation and Language · Computer Science 2024-12-31 Jingyuan Ma , Rui Li , Zheng Li , Lei Sha , Zhifang Sui

Hallucination remains a fundamental challenge in vision-language models (VLMs), where autoregressive generation may produce linguistically plausible yet physically inconsistent or visually ungrounded responses due to likelihood maximization…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Qinwu Xu

Recently, large models have shown significant potential for smart healthcare. However, the deployment of Large Vision-Language Models (LVLMs) for clinical services is currently hindered by three critical challenges: a tendency to…

Artificial Intelligence · Computer Science 2025-10-27 Siyong Chen , Jinbo Wen , Jiawen Kang , Tenghui Huang , Xumin Huang , Yuanjia Su , Hudan Pan , Zishao Zhong , Dusit Niyato , Shengli Xie , Dong In Kim

Generating rationales that justify scoring decisions has been a promising way to facilitate explainability in automated scoring systems. However, existing methods do not match the accuracy of classifier-based methods. Plus, the generated…

Computation and Language · Computer Science 2024-10-15 Jiazheng Li , Hainiu Xu , Zhaoyue Sun , Yuxiang Zhou , David West , Cesare Aloisi , Yulan He

Large Visual Language Models (LVLMs) have demonstrated impressive capabilities across multiple tasks. However, their trustworthiness is often challenged by hallucinations, which can be attributed to the modality misalignment and the…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Jiulong Wu , Zhengliang Shi , Shuaiqiang Wang , Jizhou Huang , Dawei Yin , Lingyong Yan , Min Cao , Min Zhang

Large Vision Language Models (LVLMs) have been widely adopted to guide vision foundation models in performing reasoning segmentation tasks, achieving impressive performance. However, the substantial computational overhead associated with…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Hanning Chen , Yang Ni , Wenjun Huang , Hyunwoo Oh , Yezi Liu , Tamoghno Das , Mohsen Imani

Traditional preference tuning methods for LLMs/Visual Generative Models often rely solely on reward model labeling, which can be opaque, offer limited insights into the rationale behind preferences, and are prone to issues such as reward…

Machine Learning · Computer Science 2026-01-13 Hanyang Zhao , Haoxian Chen , Yucheng Guo , Genta Indra Winata , Tingting Ou , Ziyu Huang , David D. Yao , Wenpin Tang

As an effective tool for eliciting the power of Large Language Models (LLMs), prompting has recently demonstrated unprecedented abilities across a variety of complex tasks. To further improve the performance, prompt ensemble has attracted…

Computation and Language · Computer Science 2023-08-24 Chenrui Zhang , Lin Liu , Jinpeng Wang , Chuyuan Wang , Xiao Sun , Hongyu Wang , Mingchen Cai

Recommender systems are critical for delivering personalized content across digital platforms, and recent advances in Large Language Models (LLMs) offer new opportunities to enhance them with richer world knowledge and explicit reasoning…

Information Retrieval · Computer Science 2026-05-22 Jingtong Gao , Zeyu Song , Chi Lu , Xiaopeng Li , Derong Xu , Maolin Wang , Peng Jiang , Kun Gai , Qingpeng Cai , Xiangyu Zhao

Traditional alignment methods for Large Vision and Language Models (LVLMs) primarily rely on human-curated preference data. Human-generated preference data is costly; machine-generated preference data is limited in quality; and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Jefferson Hernandez , Jing Shi , Simon Jenni , Vicente Ordonez , Kushal Kafle

Preference alignment has emerged as an effective strategy to enhance the performance of Multimodal Large Language Models (MLLMs) following supervised fine-tuning. While existing preference alignment methods predominantly target…

Computer Vision and Pattern Recognition · Computer Science 2025-09-08 Zitian Wang , Yue Liao , Kang Rong , Fengyun Rao , Yibo Yang , Si Liu

While Large Language Models (LLMs) excel at reasoning on text and Vision-Language Models (VLMs) are highly effective for visual perception, applying those models for visual instruction-based planning remains a widely open problem. In this…

Machine Learning · Computer Science 2025-09-11 Mohamed Salim Aissi , Clemence Grislain , Mohamed Chetouani , Olivier Sigaud , Laure Soulier , Nicolas Thome

Preference optimization for diffusion models aims to align them with human preferences for images. Previous methods typically use Vision-Language Models (VLMs) as pixel-level reward models to approximate human preferences. However, when…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Tao Zhang , Cheng Da , Kun Ding , Huan Yang , Kun Jin , Yan Li , Tingting Gao , Di Zhang , Shiming Xiang , Chunhong Pan

This paper presents Perceptual Preference Optimization (PerPO), a perception alignment method aimed at addressing the visual discrimination challenges in generative pre-trained multimodal large language models (MLLMs). To align MLLMs with…

Artificial Intelligence · Computer Science 2025-02-10 Zining Zhu , Liang Zhao , Kangheng Lin , Jinze Yang , En Yu , Chenglong Liu , Haoran Wei , Jianjian Sun , Zheng Ge , Xiangyu Zhang

Understanding human instructions to identify the target objects is vital for perception systems. In recent years, the advancements of Large Language Models (LLMs) have introduced new possibilities for image segmentation. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Junchi Wang , Lei Ke

Recent advances have shown that optimizing prompts for Large Language Models (LLMs) can significantly improve task performance, yet many optimization techniques rely on heuristics or manual exploration. We present LatentPrompt, a…

Computation and Language · Computer Science 2025-08-05 Mateusz Bystroński , Grzegorz Piotrowski , Nitesh V. Chawla , Tomasz Kajdanowicz

Contemporary approaches to instance segmentation in cell science use 2D or 3D convolutional networks depending on the experiment and data structures. However, limitations in microscopy systems or efforts to prevent phototoxicity commonly…

Computer Vision and Pattern Recognition · Computer Science 2023-01-27 Christopher Z. Eddy , Austin Naylor , Bo Sun

The rapid development of large language model (LLM) alignment algorithms has resulted in a complex and fragmented landscape, with limited clarity on the effectiveness of different methods and their inter-connections. This paper introduces…

The remarkable performance of Large Language Models (LLMs) highly relies on crafted prompts. However, manual prompt engineering is a laborious process, creating a core bottleneck for practical application of LLMs. This phenomenon has led to…

Computation and Language · Computer Science 2025-11-21 Qing Zhang , Bing Xu , Xudong Zhang , Yifan Shi , Yang Li , Chen Zhang , Yik Chung Wu , Ngai Wong , Yijie Chen , Hong Dai , Xiansen Chen , Mian Zhang

Despite recent successes, LVLMs or Large Vision Language Models are prone to hallucinating details like objects and their properties or relations, limiting their real-world deployment. To address this and improve their robustness, we…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Yassine Ouali , Adrian Bulat , Brais Martinez , Georgios Tzimiropoulos
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