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It is a challenging problem to reproduce rich spatial details while maintaining temporal consistency in real-world video super-resolution (Real-VSR), especially when we leverage pre-trained generative models such as stable diffusion (SD)…

Computer Vision and Pattern Recognition · Computer Science 2025-10-23 Yujing Sun , Lingchen Sun , Shuaizheng Liu , Rongyuan Wu , Zhengqiang Zhang , Lei Zhang

Weakly-supervised action localization aims to recognize and localize action instancese in untrimmed videos with only video-level labels. Most existing models rely on multiple instance learning(MIL), where the predictions of unlabeled…

Computer Vision and Pattern Recognition · Computer Science 2023-09-27 Guiqin Wang , Peng Zhao , Cong Zhao , Shusen Yang , Jie Cheng , Luziwei Leng , Jianxing Liao , Qinghai Guo

Continual learning (CL) aims to learn a sequence of tasks without forgetting prior knowledge, but gradient updates for a new task often overwrite the weights learned earlier, causing catastrophic forgetting (CF). We propose…

Machine Learning · Computer Science 2025-05-19 Neil De La Fuente , Maria Pilligua , Daniel Vidal , Albin Soutiff , Cecilia Curreli , Daniel Cremers , Andrey Barsky

Recent advances in Vision-Language-Action (VLA) models, powered by large language models and reinforcement learning-based fine-tuning, have shown remarkable progress in robotic manipulation. Existing methods often treat long-horizon actions…

Robotics · Computer Science 2025-12-25 Feng Xu , Guangyao Zhai , Xin Kong , Tingzhong Fu , Daniel F. N. Gordon , Xueli An , Benjamin Busam

Batch reinforcement learning (RL) aims at leveraging pre-collected data to find an optimal policy that maximizes the expected total rewards in a dynamic environment. The existing methods require absolutely continuous assumption (e.g., there…

Machine Learning · Statistics 2024-06-27 Xiaohong Chen , Zhengling Qi , Runzhe Wan

Large Language Models (LLMs) as autonomous agents are increasingly tasked with solving complex, long-horizon problems. Aligning these agents via preference-based offline methods like Direct Preference Optimization (DPO) is a promising…

Machine Learning · Computer Science 2026-03-03 Heyang Gao , Zexu Sun , Erxue Min , Hengyi Cai , Shuaiqiang Wang , Dawei Yin , Xu Chen

Integrating histopathology with spatial transcriptomics (ST) provides a powerful opportunity to link tissue morphology with molecular function. Yet most existing multimodal approaches rely on a small set of highly variable genes, which…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Sejuti Majumder , Saarthak Kapse , Moinak Bhattacharya , Xuan Xu , Alisa Yurovsky , Prateek Prasanna

We present HiRA-Pro, a novel procedure to align, at high spatio-temporal resolutions, multimodal signals from real-world processes and systems that exhibit diverse transient, nonlinear stochastic dynamics, such as manufacturing machines. It…

Data Analysis, Statistics and Probability · Physics 2024-03-14 Abhishek Hanchate , Himanshu Balhara , Vishal S. Chindepalli , Satish T. S. Bukkapatnam

Federated Continual Learning (FCL) has recently emerged as a crucial research area, as data from distributed clients typically arrives as a stream, requiring sequential learning. This paper explores a more practical and challenging FCL…

Machine Learning · Computer Science 2025-06-17 Minh-Duong Nguyen , Le-Tuan Nguyen , Quoc-Viet Pham

Multi-Object Tracking (MOT) in dynamic environments relies on robust temporal reasoning to maintain consistent object identities over time. Transformer-based end-to-end MOT models achieve strong performance by explicitly modeling temporal…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Riku Inoue , Shogo Sato , Kazuhiko Murasaki , Tomoyasu Shimada , Toshihiko Nishimura , Ryuichi Tanida

Reinforcement Learning (RL) with PPO-like clip objectives has become the standard choice for reward-based fine-tuning of large language models (LLMs). Although recent work has explored improved estimators of advantages and normalization,…

Machine Learning · Computer Science 2026-02-24 Philipp Becker , Niklas Freymuth , Serge Thilges , Fabian Otto , Gerhard Neumann

Finding the shortest-path distance between two arbitrary vertices is an important problem in road networks. Due to real-time traffic conditions, road networks undergo dynamic changes all the time. Current state-of-the-art methods…

Data Structures and Algorithms · Computer Science 2025-01-30 Henning Koehler , Muhammad Farhan , Qing Wang

Proactive Recommender Systems (PRSs) aim to guide user preference shift toward target items by generating paths of intermediate recommendations. Reinforcement learning (RL) provides a principled framework for optimizing such sequential…

Machine Learning · Computer Science 2026-05-29 Hongru Hou , Tiehua Mei , Denghui Geng , Jinhui Huang , Ao Xu , Hengrui Chen , Jiaqing Liang , Deqing Yang

Multimodal image-tabular learning is gaining attention, yet it faces challenges due to limited labeled data. While earlier work has applied self-supervised learning (SSL) to unlabeled data, its task-agnostic nature often results in learning…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Siyi Du , Xinzhe Luo , Declan P. O'Regan , Chen Qin

Scene-level point cloud self-supervised learning (PC-SSL) has demonstrated potential in enhancing the generalization capability of 3D vision models. Despite the advances in the field through existing methods, the sample-independent modeling…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Xinxing Yu , Ajian Liu , Sunyuan Qiang , Hui Ma , Liying Yang , Yuzhong Wang , Zhi Rao , Yanyan Liang

Existing transformer-based image backbones typically propagate feature information in one direction from lower to higher-levels. This may not be ideal since the localization ability to delineate accurate object boundaries, is most prominent…

Computer Vision and Pattern Recognition · Computer Science 2022-07-06 Gary Leung , Jun Gao , Xiaohui Zeng , Sanja Fidler

Vision-Language-Action (VLA) models excel in robotic manipulation but are constrained by their heavy reliance on expert demonstrations, leading to demonstration bias and limiting performance. Reinforcement learning (RL) is a vital…

Robotics · Computer Science 2025-12-02 Senyu Fei , Siyin Wang , Li Ji , Ao Li , Shiduo Zhang , Liming Liu , Jinlong Hou , Jingjing Gong , Xianzhong Zhao , Xipeng Qiu

Direct Preference Optimization (DPO) is a principled, scalable alternative to RLHF for aligning large language models from pairwise preferences, but its internal geometric footprint remains undercharacterized, limiting audits, checkpoint…

Machine Learning · Computer Science 2026-01-13 Arion Das , Partha Pratim Saha , Amit Dhanda , Vinija Jain , Aman Chadha , Amitava Das

Predicting crimes in urban environments is crucial for public safety, yet existing prediction methods often struggle to align the knowledge across diverse cities that vary dramatically in data availability of specific crime types. We…

Machine Learning · Computer Science 2025-11-05 Fidan Karimova , Tong Chen , Yu Yang , Shazia Sadiq

Given an untrimmed video, temporal sentence localization (TSL) aims to localize a specific segment according to a given sentence query. Though respectable works have made decent achievements in this task, they severely rely on dense video…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Daizong Liu , Xiang Fang , Pan Zhou , Xing Di , Weining Lu , Yu Cheng