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In this paper, a computational resources-aware parameter adaptation method for visual-inertial navigation systems is proposed with the goal of enabling the improved deployment of such algorithms on computationally constrained systems. Such…

Robotics · Computer Science 2021-06-02 Pranay Mathur , Nikhil Khedekar , Kostas Alexis

Inspired by the success of reinforcement learning (RL) in refining large language models (LLMs), we propose AR-GRPO, an approach to integrate online RL training into autoregressive (AR) image generation models. We adapt the Group Relative…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Shihao Yuan , Yahui Liu , Yang Yue , Jingyuan Zhang , Wangmeng Zuo , Qi Wang , Fuzheng Zhang , Guorui Zhou

This paper presents a novel algorithm, the particle-based, rapid incremental smoother (PaRIS), for efficient online approximation of smoothed expectations of additive state functionals in general hidden Markov models. The algorithm, which…

Computation · Statistics 2014-12-25 Jimmy Olsson , Johan Westerborn

Model-based offline reinforcement learning (RL) has emerged as a promising approach for recommender systems, enabling effective policy learning by interacting with frozen world models. However, the reward functions in these world models,…

Information Retrieval · Computer Science 2025-05-13 Yi Zhang , Ruihong Qiu , Xuwei Xu , Jiajun Liu , Sen Wang

Large Language Models (LLMs) have demonstrated powerful reasoning capabilities through Chain-of-Thought (CoT) in various tasks, yet the inefficiency of token-by-token generation hinders real-world deployment in latency-sensitive recommender…

Information Retrieval · Computer Science 2026-05-12 Yiwen Chen , Fuwei Zhang , Zehao Chen , Deqing Wang , Hehan Li , Peizhi Xu , Hanmeng Liu , Shuanglong Li , Xin Pei , Fuzhen Zhuang , Zhao Zhang

Recent advances in flow matching models, particularly with reinforcement learning (RL), have significantly enhanced human preference alignment in few step text to image generators. However, existing RL based approaches for flow matching…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Zhixiong Yue , Zixuan Ni , Feiyang Ye , Jinshan Zhang , Sheng Shen , Zhenpeng Mi

Conservatism has led to significant progress in offline reinforcement learning (RL) where an agent learns from pre-collected datasets. However, as many real-world scenarios involve interaction among multiple agents, it is important to…

Machine Learning · Computer Science 2022-04-05 Ling Pan , Longbo Huang , Tengyu Ma , Huazhe Xu

Large language models often require fine-tuning to better align their behavior with user intent at deployment. Existing approaches are commonly divided into online and offline paradigms. Online methods, such as RL-based alignment, can…

Machine Learning · Computer Science 2026-05-19 Shijun Li , Kaiwen Dong , Xiang Gao , Joydeep Ghosh

Expressive policies based on flow-matching have been successfully applied in reinforcement learning (RL) more recently due to their ability to model complex action distributions from offline data. These algorithms build on standard policy…

Machine Learning · Computer Science 2026-02-04 Mingxuan Li , Junzhe Zhang , Elias Bareinboim

To imitate the ability of keeping learning of human, continual learning which can learn from a never-ending data stream has attracted more interests recently. In all settings, the online class incremental learning (OCIL), where incoming…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Guoqiang Liang , Zhaojie Chen , Zhaoqiang Chen , Shiyu Ji , Yanning Zhang

Recent advancements in reinforcement learning (RL) have achieved great success in fine-tuning diffusion-based generative models. However, fine-tuning continuous flow-based generative models to align with arbitrary user-defined reward…

Machine Learning · Computer Science 2025-02-11 Jiajun Fan , Shuaike Shen , Chaoran Cheng , Yuxin Chen , Chumeng Liang , Ge Liu

CLIP (Contrastive Language-Image Pre-training) uses contrastive learning from noise image-text pairs to excel at recognizing a wide array of candidates, yet its focus on broad associations hinders the precision in distinguishing subtle…

Computer Vision and Pattern Recognition · Computer Science 2026-05-18 Ziyu Liu , Zeyi Sun , Yuhang Zang , Wei Li , Pan Zhang , Xiaoyi Dong , Yuanjun Xiong , Dahua Lin , Jiaqi Wang

Direct Alignment Algorithms (DAAs) such as Direct Preference Optimization (DPO) have emerged as alternatives to the standard Reinforcement Learning from Human Feedback (RLHF) for aligning large language models (LLMs) with human values.…

Machine Learning · Computer Science 2025-06-12 Phuc Minh Nguyen , Ngoc-Hieu Nguyen , Duy H. M. Nguyen , Anji Liu , An Mai , Binh T. Nguyen , Daniel Sonntag , Khoa D. Doan

Parameter-Efficient Fine-Tuning (PEFT) has become the standard for adapting large language models (LLMs). In this work we challenge the wide-spread assumption that parameter efficiency equates memory efficiency and on-device adaptability.…

Machine Learning · Computer Science 2026-04-28 Irene Tenison , Stella Ahn , Miriam Kim , Ebtisam Alshehri , Lalana Kagal

Measuring the built and natural environment at a fine-grained scale is now possible with low-cost urban environmental sensor networks. However, fine-grained city-scale data analysis is complicated by tedious data cleaning including removing…

Machine Learning · Computer Science 2021-09-03 Yue Hu , Ao Qu , Yanbing Wang , Dan Work

In surgical skill assessment, the Objective Structured Assessments of Technical Skills (OSATS) and Global Rating Scale (GRS) are well-established tools for evaluating surgeons during training. These metrics, along with performance feedback,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-18 Julien Quarez , Marc Modat , Sebastien Ourselin , Jonathan Shapey , Alejandro Granados

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

Group Relative Policy Optimization (GRPO) has emerged as a promising critic-free reinforcement learning paradigm for reasoning tasks. However, standard GRPO employs a coarse-grained credit assignment mechanism that propagates group-level…

Computation and Language · Computer Science 2026-01-13 Ziheng Li , Liu Kang , Feng Xiao , Luxi Xing , Qingyi Si , Zhuoran Li , Weikang Gong , Deqing Yang , Yanghua Xiao , Hongcheng Guo

In the context of Omni-Directional Image (ODI) Super-Resolution (SR), the unique challenge arises from the non-uniform oversampling characteristics caused by EquiRectangular Projection (ERP). Considerable efforts in designing complex…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Xuelin Shen , Yitong Wang , Silin Zheng , Kang Xiao , Wenhan Yang , Xu Wang

Continual learning (CL) in vision-language models (VLMs) faces significant challenges in improving task adaptation and avoiding catastrophic forgetting. Existing methods usually have heavy inference burden or rely on external knowledge,…

Machine Learning · Computer Science 2026-02-02 Zhan Fa , Yue Duan , Jian Zhang , Lei Qi , Wanqi Yang , Yinghuan Shi