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Real-World Image Super-Resolution is one of the most challenging task in image restoration. However, existing methods struggle with an accurate understanding of degraded image content, leading to reconstructed results that are both…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Junbo Qiao , Miaomiao Cai , Wei Li , Xudong Huang , Jie Hu , Xinghao Chen , Shaohui Lin , Hongkai Xiong

Direct Preference Optimization (DPO) have emerged as a popular method for aligning Large Language Models (LLMs) with human preferences. While DPO effectively preserves the relative ordering between chosen and rejected responses through…

Computation and Language · Computer Science 2025-06-05 Lin Sun , Chuang Liu , Peng Liu , Bingyang Li , Weijia Lu , Ning Wu

Multimodal Chain-of-Thought (CoT) reasoning requires large vision-language models to construct reasoning trajectories that interleave perceptual grounding with multi-step inference. However, existing Reinforcement Learning with Verifiable…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Yunheng Li , Hangyi Kuang , Hengrui Zhang , Jiangxia Cao , Zhaojie Liu , Qibin Hou , Ming-Ming Cheng

Group Relative Policy Optimization(GRPO) has become a cornerstone of modern reinforcement learning alignment, prized for its efficacy in foregoing an explicit value-critic by leveraging reward normalization across sampled trajectory…

Computation and Language · Computer Science 2026-05-29 Redacted by arXiv

Direct Preference Optimization (DPO) has become a prominent method for aligning Large Language Models (LLMs) with human preferences. While DPO has enabled significant progress in aligning English LLMs, multilingual preference alignment is…

Computation and Language · Computer Science 2025-06-06 Wen Yang , Junhong Wu , Chen Wang , Chengqing Zong , Jiajun Zhang

Recent advances in large vision-language models (LVLMs) have shown promise for embodied task planning, yet they struggle with fundamental challenges like dependency constraints and efficiency. Existing approaches either solely optimize…

Computation and Language · Computer Science 2025-03-14 Siyin Wang , Zhaoye Fei , Qinyuan Cheng , Shiduo Zhang , Panpan Cai , Jinlan Fu , Xipeng Qiu

Reinforcement Learning with Human Feedback (RLHF) enhances the alignment of Large Language Models (LLMs). However, its limitations have led to the development of Direct Preference Optimization (DPO), an RL-free approach designed to overcome…

Computation and Language · Computer Science 2025-02-19 Amir Saeidi , Shivanshu Verma , Aswin RRV , Kashif Rasul , Chitta Baral

Small Vision Language Models (SVLMs) generally refer to models with parameter sizes less than or equal to 2B. Their low cost and power consumption characteristics confer high commercial value. However, their reasoning abilities are limited…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Fanyi Wang , Binzhi Dong , Haotian Hu , Jinjin Xu , Zhiwang Zhang

We propose using Vision-Language Models (VLMs) for macro placement in chip floorplanning, a complex optimization task that has recently shown promising advancements through machine learning methods. Because human designers rely heavily on…

Logical reasoning is a key task for artificial intelligence due to it's role in major downstream tasks such as Question Answering, Summarization. Recent methods in improving the reasoning ability of LLMs fall short in correctly converting a…

Machine Learning · Computer Science 2025-06-24 Koushik Viswanadha , Deepanway Ghosal , Somak Aditya

Spatial reasoning in large language models (LLMs) has gained increasing attention due to applications in navigation and planning. Despite strong general language capabilities, LLMs still struggle with spatial transformations and multi-step…

Artificial Intelligence · Computer Science 2026-01-01 Amir Tahmasbi , Sadegh Majidi , Kazem Taram , Aniket Bera

Large Language Models (LLMs) and Vision Language Models (VLMs) have shown impressive reasoning abilities, yet they struggle with spatial understanding and layout consistency when performing fine-grained visual editing. We introduce a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Haoyu Zhen , Xiaolong Li , Yilin Zhao , Han Zhang , Sifei Liu , Kaichun Mo , Chuang Gan , Subhashree Radhakrishnan

Vision-language models (VLMs) show promise for autonomous driving but often lack transparent reasoning capabilities that are critical for safety. We investigate whether explicitly modeling reasoning during fine-tuning enhances VLM…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Amirhosein Chahe , Lifeng Zhou

Contemporary Vision-Language Models (VLMs) achieve strong performance on a wide range of tasks by pairing a vision encoder with a pre-trained language model, fine-tuned for visual-text inputs. Yet despite these gains, it remains unclear how…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Lachin Naghashyar , Hunar Batra , Ashkan Khakzar , Philip Torr , Ronald Clark , Christian Schroeder de Witt , Constantin Venhoff

Recent advancements in reinforcement learning, particularly through Group Relative Policy Optimization (GRPO), have significantly improved multimodal large language models for complex reasoning tasks. However, two critical limitations…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Jisheng Dang , Jingze Wu , Teng Wang , Xuanhui Lin , Nannan Zhu , Hongbo Chen , Wei-Shi Zheng , Meng Wang , Tat-Seng Chua

Vision-Language Models (VLMs) have made significant strides in static image understanding but continue to face critical hurdles in spatiotemporal reasoning. A major bottleneck is "multi-image reasoning hallucination", where a massive…

Artificial Intelligence · Computer Science 2026-04-14 Xiaoda Yang , Shuai Yang , Can Wang , Jingyang Xue , Menglan Tang , Checheng Yu , Xunzhe Zhou , Sashuai Zhou , Tao Jin , Lixin Yang , Xiangyu Yue , Zhou Zhao

In the field of large language models (LLMs), aligning models with the diverse preferences of users is a critical challenge. Direct Preference Optimization (DPO) has played a key role in this area. It works by using pairs of preferences…

Computation and Language · Computer Science 2024-05-29 Yueqin Yin , Zhendong Wang , Yi Gu , Hai Huang , Weizhu Chen , Mingyuan Zhou

In this work, we aim to incentivize the reasoning ability of Multimodal Large Language Models (MLLMs) via reinforcement learning (RL) and develop an effective approach that mitigates the sparse reward and advantage vanishing issues during…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Huanjin Yao , Qixiang Yin , Jingyi Zhang , Min Yang , Yibo Wang , Wenhao Wu , Fei Su , Li Shen , Minghui Qiu , Dacheng Tao , Jiaxing Huang

Fine-tuning Vision-Language Models (VLMs) is a common strategy to improve performance following an ad-hoc data collection and annotation of real-world scenes. However, this process is often prone to biases, errors, and distribution…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Massimo Rizzoli , Simone Alghisi , Seyed Mahed Mousavi , Giuseppe Riccardi

We present SignDPO, a novel multi-level Direct Preference Optimisation (DPO) framework designed to enhance the alignment of skeleton-based Sign Language Translation. While current skeleton-based models have made significant progress using…

Computation and Language · Computer Science 2026-04-21 Muxin Pu , Xiao-Ming Wu , Mei Kuan Lim , Chun Yong Chong , Wei Li , Chen Change Loy
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