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Despite recent advances in text-to-image generation, using synthetically generated data seldom brings a significant boost in performance for supervised learning. Oftentimes, synthetic datasets do not faithfully recreate the data…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Jae Myung Kim , Stephan Alaniz , Cordelia Schmid , Zeynep Akata

Despite recent progress, reinforcement learning (RL)-based fine-tuning of diffusion models often struggles with generalization, composability, and robustness against reward hacking. Recent studies have explored prompt refinement as a…

Machine Learning · Computer Science 2026-03-26 Suhyeon Lee , Jong Chul Ye

Diffusion models have achieved remarkable success in image generation, yet their deployment remains constrained by the heavy computational cost and the need for numerous inference steps. Previous efforts on fewer-step distillation attempt…

Computer Vision and Pattern Recognition · Computer Science 2025-12-12 Zhuobai Dong , Rui Zhao , Songjie Wu , Junchao Yi , Linjie Li , Zhengyuan Yang , Lijuan Wang , Alex Jinpeng Wang

Vision-Language-Action (VLA) models enable embodied decision-making but rely heavily on imitation learning, leading to compounding errors and poor robustness under distribution shift. Reinforcement learning (RL) can mitigate these issues…

Video Diffusion Models (VDMs) have emerged as powerful generative tools, capable of synthesizing high-quality spatiotemporal content. Yet, their potential goes far beyond mere video generation. We argue that the training dynamics of VDMs,…

Computer Vision and Pattern Recognition · Computer Science 2025-06-11 Pablo Acuaviva , Aram Davtyan , Mariam Hassan , Sebastian Stapf , Ahmad Rahimi , Alexandre Alahi , Paolo Favaro

Low-rank adapters (LoRA) and their variants are popular parameter-efficient fine-tuning (PEFT) techniques that closely match full model fine-tune performance while requiring only a small number of additional parameters. These additional…

Machine Learning · Computer Science 2024-05-28 Runqian Wang , Soumya Ghosh , David Cox , Diego Antognini , Aude Oliva , Rogerio Feris , Leonid Karlinsky

Latent Consistency Models (LCMs) have achieved impressive performance in accelerating text-to-image generative tasks, producing high-quality images with minimal inference steps. LCMs are distilled from pre-trained latent diffusion models…

Computer Vision and Pattern Recognition · Computer Science 2023-11-10 Simian Luo , Yiqin Tan , Suraj Patil , Daniel Gu , Patrick von Platen , Apolinário Passos , Longbo Huang , Jian Li , Hang Zhao

Reinforcement learning (RL) can refine Vision-Language-Action (VLA) policies beyond behavior cloning, but real-world RL remains expensive due to extensive rollouts, resets, supervision, and safety risks. Action-conditioned video world…

Robotics · Computer Science 2026-05-26 Xiaokang Liu , Zechen Bai , Hai Ci , Kevin Yuchen Ma , Mike Zheng Shou

Vision-language models (VLMs) still struggle with visual perception tasks such as spatial understanding and viewpoint recognition. One plausible contributing factor is that natural image datasets provide limited supervision for low-level…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Guanyu Zhou , Yida Yin , Wenhao Chai , Shengbang Tong , Xingyu Fu , Zhuang Liu

Diffusion and flow models achieve State-Of-The-Art (SOTA) generative performance, yet many practically important behaviors such as fine-grained prompt fidelity, compositional correctness, and text rendering are weakly specified by score or…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Yuanzhi Zhu , Xi Wang , Stéphane Lathuilière , Vicky Kalogeiton

Parameter-Efficient Fine-Tuning (PEFT) methods, particularly Low-Rank Adaptation (LoRA), are indispensable for efficiently customizing Large Language Models (LLMs). However, vanilla LoRA suffers from slow convergence speed and knowledge…

Machine Learning · Computer Science 2025-11-03 Minrui Luo , Fuhang Kuang , Yu Wang , Zirui Liu , Tianxing He

Supervised fine-tuning (SFT) is a common method to enhance the tool calling capabilities of Large Language Models (LLMs), with the training data often being synthesized. The current data synthesis process generally involves sampling a set…

Computation and Language · Computer Science 2025-03-18 Zezhong Wang , Xingshan Zeng , Weiwen Liu , Liangyou Li , Yasheng Wang , Lifeng Shang , Xin Jiang , Qun Liu , Kam-Fai Wong

Vision-Language-Action (VLA) models have shown substantial potential in real-world robotic manipulation. However, fine-tuning these models through supervised learning struggles to achieve robust performance due to limited, inconsistent…

Robotics · Computer Science 2025-04-15 Yuhui Chen , Shuai Tian , Shugao Liu , Yingting Zhou , Haoran Li , Dongbin Zhao

In this paper, we present DiffusionVLA, a novel framework that seamlessly combines the autoregression model with the diffusion model for learning visuomotor policy. Central to our approach is a next-token prediction objective, enabling the…

Vision-language models (VLMs) trained via reinforcement learning with verifiable reward (RLVR) have shown notable progress in scaling test-time compute effectively. In this work, we investigate how synthesized RL data can further improve…

Machine Learning · Computer Science 2025-06-04 Zijian Wu , Jinjie Ni , Xiangyan Liu , Zichen Liu , Hang Yan , Michael Qizhe Shieh

Fine-tuning text-to-image diffusion models is widely used for personalization and adaptation for new domains. In this paper, we identify a critical vulnerability of fine-tuning: safety alignment methods designed to filter harmful content…

Artificial Intelligence · Computer Science 2024-12-03 Sanghyun Kim , Moonseok Choi , Jinwoo Shin , Juho Lee

Low-Rank Adaptation (LoRA) has emerged as one of the most widely used parameter-efficient fine-tuning (PEFT) methods for adapting large language models (LLMs) to downstream tasks. While highly effective in single-task settings, it struggles…

Computation and Language · Computer Science 2025-10-14 Bo Cheng , Xu Wang , Jinda Liu , Yi Chang , Yuan Wu

In continual learning, a model learns incrementally over time while minimizing interference between old and new tasks. One of the most widely used approaches in continual learning is referred to as replay. Replay methods support interleaved…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Truman Hickok , Dhireesha Kudithipudi

Efficiently updating Large Language Models (LLMs) with new or evolving factual knowledge remains a central challenge, as even parameter-efficient adaptation can erode previously acquired reasoning abilities. This tension reflects a…

Artificial Intelligence · Computer Science 2026-05-26 Mustafa Hayri Bilgin , Mariam Barry , Albert Bifet , Azzedine Idir Ait Said , Soumya Banerjee

We investigate the potential of learning visual representations using synthetic images generated by text-to-image models. This is a natural question in the light of the excellent performance of such models in generating high-quality images.…

Computer Vision and Pattern Recognition · Computer Science 2023-10-27 Yonglong Tian , Lijie Fan , Phillip Isola , Huiwen Chang , Dilip Krishnan